P1457 Honda? (Professionals recommend)


  • It is a Honda specific code, which means that it has the same meaning in any vehicle manufactured by Honda (including Acura). P1457 indicates that there is a leakage coming from the EVAP canister system. It is typically caused by an issue with the gas cap, or failure to snug it all the way.

What does P1457 mean?

Error Code P1457 is defined as Evaporative Emissions Control System Leakage EVAP Canister System. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as Honda.

What is code P1457 on Honda CRV?

This is a trouble code for a leak in the evaporative (EVAP) system, the charcoal canister side of the system. This may be caused by a restricted purge line, evaporative canister vent shut valve, bypass solenoid/two-way valve, purge solenoid and/or a leaking canister or evaporative hose ….

Where is the EVAP vent solenoid located?

In most cars, the EVAP vent valve is located underneath the vehicle, close to or at the charcoal canister near the fuel tank, see the photo.

What causes P1457?

The most common problem that will trigger the P1457 fault is the Honda EVAP canister vent shut valve. The valve usually gets stuck due to corrosion or leaks. Defective 2 Way Bypass Valve.

Is EVAP code serious?

But because an EVAP leak can potentially be a severe and environmentally damaging problem, it’s not a good idea to keep driving with the check engine light on. Whatever condition your vehicle is in—whether it’s showing symptoms of a fuel leak or not—aim to have the codes pulled as soon as possible.

How does Honda EVAP system work?

The EVAP system controls the pressure inside the tank with two valves on most Honda models. The other valve allows air into the tank to equalize pressure, or it can direct the vapors into the charcoal canister so they can be burned off later. This valve is called the canister control solenoid or valve.

Will an EVAP code clear itself?

If the condition that caused it to come on is a minor fault, and stops occurring, then yes, it will clear itself. If the condition indicates a larger problem, then it will stay on until cleared manually.

What is EVAP control system leakage?

An EVAP leak is a fault in the evaporative emission control system (EVAP). The EVAP’s function is to keep gasoline fumes in the fuel tank from reaching the atmosphere. This keeps air pollution down and keeps the smell of fuel from reaching the inside of your vehicle.

How do I fix code P0497?

What repairs can fix the P0497 code?

  1. Reconnection of hoses or loose connectors.
  2. Wiring replacement.
  3. Vacuum.
  4. Charcoal canister replacement.
  5. Canister purge valve replacement.
  6. Gas cap replacement.
  7. Clearing of codes and retesting with a scanner to ensure the problem is fixed.

What is EVAP canister?

The EVAP canister is usually rectangular plastic container mounted somewhere in the vehicle. The canister is filled with activated charcoal, which absorbs and stores gasoline vapors. The vapors are stored in the canister until the engine is being driven.

What is the charcoal canister?

The charcoal canister (aka: EVAP canister) is an essential part of the Evaporative Emission Control System (often shortened to “EVAP”). This system helps ensure that dangerous fumes from your gas tank aren’t released into the environment and instead puts them to work powering the engine.

What causes a P0449 code?

Defective vent valves, fuel tank filler necks, EVAP hoses, carbon canisters, gaskets, and fuel tanks are all potential causes of code P0449. Since a code P0449 relates to a leak in the evaporation system, anywhere that fumes could be escaping is a potential cause.

What happens when EVAP solenoid goes bad?

On top of a rough idle, a vehicle with a failing EVAP canister purge valve will display signs of poor engine performance. The engine may feel like its running “weak” and won’t generate sufficient power for acceleration. Accelerating will feel like you’re pressing the pedal down and moving slower.

How much does it cost to replace a vent solenoid?

Replacing a canister purge solenoid is a pretty straightforward type of job that doesn’t cost too much. Expect to pay anywhere from $80 to $200 in total. The part will typically cost anywhere from $30 to $120, while the labor costs will be right around $50 to $80.

Honda P1457 Fault Code Problem, Cause, Solution

The Honda Check Engine Light (CEL) may illuminate as a result of the defect code P1457. This trouble code is fairly prevalent on Honda automobiles, including the Accord, Civic, Odyssey, and CR-V. The vent valve on the charcoal canister, which is located under the car near the fuel tank, is frequently the source of the Honda P1457 code.

Causes of P1457 Code on Honda Vehicles

If the EVAP system fails to pass the self-test at least twice, the check engine light will be on (also known as CEL or MIL). In most cases, code P1457 on Honda automobiles has no effect on the engine’s performance. Despite the fact that the engine continues to operate without experiencing any performance degradation, it is suggested that code P1457 be resolved as soon as feasible.

  • P1457 is caused by an issue with the Honda EVAP canister vent shut valve, which is the most prevalent cause of the failure. The valve frequently becomes stuck owing to corrosion or leakage
  • However, this is not always the case. 2 Way Bypass Valve that is not working properly
  • Vacuum line from the charcoal canister that is damaged or crimped


  • When scanning codes with an OBD-II scanner, the Check Engine light is illuminated, and the Honda Code P1457 is present.

How to fix it

In order to resolve this issue, the EVAP by-pass shut valve part17310-S5A-L31 must be replaced. While it is not needed, it is highly advised that the EVAP Canister be replaced at the same time. Corrosion or early failure of the canister vent shut off valve are the most common causes of the problem. In close proximity to the gas tank is the EVAP canister as well as the shut-off valve. They may be accessible through the vehicle’s undercarriage. It is not essential to remove the gasoline tank.


  1. Raise the rear wheels of your Honda Accord, Civic, or CR-V to their maximum height. Place jack stands under the car to provide support
  2. Navigate your way beneath the car until you find the charcoal canister shutoff valve. Depending on the vehicle, such as the Honda CR-V, the unit may be shielded by a metal plate. Remove the 13mm bolt that holds the metal shield in place. It is highly advised that you spray Penetrating Liquid on the bolts the night before the repair is completed. The bolts will be easier to remove the next day as a result of this. Remove the second 13mm bolt from the nut. Disconnect the connection from the shut-off valve and set it aside. Clamps should be removed from hoses. The hoses should be carefully disconnected from the cutoff valve and the charcoal canister. Removing the bolt that secures the shut-off valve on the canister is a simple process. In most cases, these bolts are corroded. To remove them, use a pair of vice grip pliers to pry out the rusty bolts
  3. Then reinstall everything in reverse order.

Related Part Numbers

  • Canister assembly: 17011-S5A-A30
  • Canister vent shut valve: 17310-S5A-L31
  • Canister

To double-check part numbers, call your local Honda dealer or send an email to the supplier.

Special Tips

If your Honda CEL is illuminated as a result of the P1457 fault code, you will not be able to pass the state emission test. After clearing the P1457 fault without addressing the root cause, your CEL / MIL light will illuminate again within two to three days of clearing the fault. When you fill up your gas tank at the gas station, be careful not to overfill it with petrol. Visually examine the vacuum hoses near the EVAP canister to ensure they are in good condition. Examine the lines for fractures or tears, as well as any damage to the EVAP box itself, to ensure that none exist.

Things you need to know

The diagnosis of an EVAP system might be complicated. In order to accurately diagnose the Honda P1457 code, you need do a smoke test, which will check for leaks in the exhaust gas aftertreatment system. The screws may come loose during the removal procedure, and you may have to replace the entire canister as well as the valve if this happens too often. In most cases, replacing the gas cap will not resolve the Honda P1457 problem. A defective ECU EVAP circuit or a broken wire can also result in the Honda vehicle’s code P1457 being triggered.

Safety warnings

You will be operating in close proximity to the gasoline tank. It is not necessary to use a heat torch to warm up and remove the bolt.

Frequently Asked Questions

In most cases, replacing the gas cap will not resolve the Honda P1457 error code. When a P1457 error code is shown on a Honda, many owners choose to replace the gas cap. Directly activating the solenoid is a straightforward test that you may carry out. Alternatively, if it does not respond at all, it is most likely that the solenoid is defective. Performing a smoke test on your Honda is necessary if you have already changed the charcoal canister vent valve and still have the P1457 code on your dashboard.


It is planned to run a self-test on the EVAP system in the following two driving cycles.

It is possible that this problem will affect any model year, although it is most frequently associated with the following years: 1996-1997; 1998-1999; 2000-2001; 2002-2003; 2004-2005; and 2006-2007.’

P1457 Honda OBD2 Code: Meaning, Symptoms, Causes, Diagnostics, And Fixes

P1457 on a Honda is a difficult code to diagnose and repair owing to the intricacy of the components that are involved in the process. A professional specialist may be required to resolve this issue in Honda automobiles such as the Civic, Accord, Odyssey, and CR-V in order to get a more beneficial solution. The OBD2 code is associated with problems with the EVAP (Evaporative Emissions Control System). The following are the most common reasons for the PCM to save the above code:

  • Defective or damaged vent shut valve on the EVAP charcoal canister
  • Defective or damaged vacuum line to the canister
  • A two-way Bypass valve that is not operating properly

The P1457 error code may be repaired using simple processes, but the repair worker must be well-versed in the use of the instruments that are required for the job. Furthermore, the repair worker must be aware with rigorous maintenance practices in order to make the repair process smoother and faster.

P1457 Honda: What does it mean?

P1457 is defined as ‘Evaporative Emissions (EVAP) control system leakage (EVAP Canister system) EVAP’ in the problem code dictionary. According to the manufacturer, the P1457 Honda OBD2 diagnostic error code means ‘Evaporative Emissions (EVAP) control system leakage (EVAP Canister system) EVAP.’ P1457 is a manufacturer-specific code, which means that it does not apply to all vehicle models produced by that manufacturer. The code is only applicable to select automobiles, such as those manufactured by Honda, Ford, BMW, Mercedes, Porsche, Volkswagen, and General Motors.

Specifically, the P1457 Honda, P1457 Acura, and P1457 Ford all refer to an EVAP canister and vacuum retention problem.

Meaning of P1457 on Honda

When a failure is identified in the EVAP system, the ECM stores the P1457 code in the ECM’s memory. When the Evaporative Emissions Control System (EVAP) is defective, it may be unable of maintaining or drawing a vacuum in the fuel tank, respectively. Included in the EVAP system are the following components: fuel tank, gas filler cap, wiring and connections, vacuum lines, and gasoline and diesel lines. Other components of the system include: control solenoids, a purge valve, a vent valve, a charcoal canister, and pressure sensors, among others.

  • It accomplishes this by accumulating the fuel vapors in the container.
  • Fresh air is fed into the system through the vent shut valve to help in the disposal of vapors from the canister, and the procedure begins.
  • The test is carried out by closing the vent control valve until the engine vacuum has created sufficient vacuum, which is accomplished by sucking gasoline vapors into the engine through the purge valve.
  • The PCM will next check for leaks in order to establish whether or not the vacuum can be maintained for the required amount of time.
  • When it comes to a properly operating EVAP system, there should be no leaks.

Leaks in the fuel cap, charcoal canister, or vacuum lines will prevent the engine from generating or maintaining the self-test vacuum pressure. Consequently, the P1457 DTC will be saved by the PCM, and the check engine light will illuminate.

Symptoms of code P1457 on Honda

  1. A Check Engine Light (CEL) or a Service Engine Soon Warning that is illuminated
  2. A P1457 OBD 2 fault code that has been saved
  3. If there is a significant vacuum leak, the engine will run rough and stall. At least two emissions tests have been failed by the car. If there is a leak, the smell of gasoline and other scents will be obvious.
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What causes the P1457 Honda

  1. A faulty vacuum line connecting the charcoal canister to the generator
  2. EVAP vent valve that is stuck or rusted
  3. Wiring and connections that have been burned or rusted
  4. Circuits that are faulty or open
  5. In the event that other fuel tank pressure sensor-related codes are present, a bad fuel tank pressure sensor is suspected. In the event that other purge valve-related errors are present, the purge valve may be malfunctioning. Canister fuel cap that is not functioning properly
  6. Charcoal canister that is broken or not operating properly

How to diagnose and fix the code P1457 on your Honda

  1. First and foremost, while doing any type of car repair, you should seek for any technical service bulletins (TSB) for your vehicle model that are related to the P1457 code. Due to the fact that TSBs provide proven solutions to the code, they will save you both time and money. Consult your vehicle’s owner’s handbook for any repair recommendations, and then follow the instructions outlined in the manual to resolve the P1457 code issue. Before beginning any generic diagnosing and mending procedure, be sure to check for these two things (the TSBs and the car handbook). This diagnosis will necessitate the use of the following instruments:

Repairing the code P1457 on your Honda may be accomplished with the use of an OBD2 scan tool/OEM comparable scanner with control functions.

  • In addition to the repair instructions, you will need a digital multimeter, a vacuum pump, and a smoke machine.

If the car is placed on a hoist or lift so that the components can be accessed, the diagnosis and repair will be much easier.

Step 1

Using the scan tool, make a list of all of the OBD2 diagnostic issue codes that have been stored. In addition, any other codes that may have been present should be addressed first, particularly those that pertain to the EVAP or fueling system.


After you’ve fixed any additional stored codes, you should clear all of the codes from your computer. Test drive the vehicle for at least one complete driving cycle and then rescan the car to determine if any codes have returned to the display. If the P1457 error code is returned, go to the next step.

Step 2

Locate the EVAP components, as well as their related wiring, connections, fuel lines, and vacuum lines, by consulting your Honda vehicle’s owner’s handbook. Damage, cracks, or corrosion should be visually inspected on all lines, cables, connections, and other EVAP components, as well as the EVAP itself. Remove and shake the charcoal canister to check for any signs of breakdown of the charcoal charge. If there is any evidence of charcoal dust in the EVAP system, it should be replaced. Airflow difficulties can also be detected in the charcoal canister, which should only occur when the canister is placed far enough away from the vent valve.


It is necessary to replace all of the damaged components with appropriate replacement parts in order to prevent leaks. In the case of corrosion on the components, particularly on the charcoal canister, this might cause defects in the valves, resulting in the valves being stuck as a result of corrosion or leaks. After you’ve resolved the problems, delete all of the saved codes. Test drive the vehicle for at least one complete driving cycle to see if the error code reappears or not. If the P1457 error code is returned, go to the next step.

Step 3

All of the wiring and connections around the EVAP system should be visually checked. Damages, shorts, burns, disconnections, and corrosions should all be looked for.


Make the required repairs to the wiring and connectors to ensure that they function properly. The wiring and connections should be replaced if this is the best course of action.

Step 4

Identify and repair any faulty electrical connections on all of the interconnecting wire if the code is returned. You will conduct ground, resistance, and continuity tests on the wire in this section. This is the phase when you will need to make use of the digital multimeter that you purchased earlier. Disassemble the EVAP system in order to check each component individually. The input voltage is indicated in the car handbook, and this number should be documented down as you go through the process of checking it.

When doing resistance and continuity tests, it is important to remember to unplug the EVAP equipment from the computer. This is done in order to protect the controller from being harmed by the procedure.


If there are any detours, make the necessary repairs immediately. Check the input voltage once more to verify if the repairs were successful in resolving the problem. Proceed to compare the resistance of the control valve to the resistance specified in the instructions, and replace the valve if the figures do not match.

Step 5

If the P1457 code continues to be shown, it is possible that there are leaks in the vacuum line. As part of this procedure, a smoke test of the whole EVAP system will be required to be carried out. Replace the EVAP system and check that the vent valve is closed and the purge valve is open before reassembling it. Connect the smoke machine to the intake manifold at the point where the vacuum line joins it. Using the scan tool, command the purge valve to open and then close it. This permits the smoke to permeate the whole EVAP system and contaminate the air.

  • Keep an eye out for any smoke that may arise as a result of pinholes in the vacuum piping.
  • If the smoke machine does not identify any leaks, you will need to utilize the vacuum pump to remove the smoke.
  • Connect the vacuum pump to the system and begin drawing a vacuum with the vacuum pump.
  • If everything is operating at peak performance, the vacuum will last for a couple of minutes; otherwise, the faulty component will need to be replaced.


Replacement of the vacuum lines, valves, and filler cap is required depending on where the smoke has escaped or where the vacuum is unable to hold the vacuum. The following actions should assist you in getting rid of the P1457 error code. If this is not the case, the code might be the consequence of another problem. Before re-running the following procedures, you will need to locate and correct the problem that caused the error. In the event that the problem remains, you will have to wait for it to deteriorate over an extended period of time.

  • P1456 – Fuel Tank Leakage in the Evaporative Emissions Control System

Tips to avoid code P1457 in the future

Taking good care of and maintaining your EVAP charcoal canister, as well as the accompanying valves and vacuum lines, is the most important recommendation for avoiding the P1457 code in the future. Avoid driving on muddy or dusty roads, or perform a routine cleaning and maintenance process to remove any deposits that have accumulated. Corrosion and leaks can cause damage to the canister vent valve, which can cause it to become stuck.

Final Thoughts

Because it has no relationship to the engine’s performance, the P1457 OBD2 code does not cause any drivability issues in the vehicle. Leaks in the gasoline system, on the other hand, may eventually result in additional problems that will impair driving performance. Poor gas mileage and engine misfires are two of the possible side effects of this condition.

P1457 OBD2 diagnostic issue code should be resolved as quickly as possible, and this is the prudent and most suggested course of action. In the case of the Cummins engine, this means that there is no connection between the ECM and the injection pump module data.

P1457 Honda

The P1457 Honda trouble code indicates that there is a leak in the evaporative emissions system on the charcoal canister side of the system, which is the cause of the problem. In order to fix the P1457 Honda problem code that appears on the cars mentioned below, Honda has released service bulletin08-016. Honda has concluded that the most probable reason is a clogged or limited EVAP solenoid fuel vent valve, which is located in the engine compartment.

Also interesting

Vehicles affected by Honda service bulletin08-016 and P1457 Honda trouble code

Civic 2/4-Door (2001–2005) – ALL MODELS Civic 3-Door (2002–2005) – EVERYTHING ALL 2003–2005 Civic Hybrid ULEV vehicles 2002–2004 Honda CR-V – EVERYTHING

Diagnose P1457 Honda

The vent shut valve for the charcoal canister is positioned on the side of the charcoal canister. It’s hidden behind a cover right close to the canister. The solenoids are powered by a wire that is black and orange in color. Check for battery voltage on the black/orange wires that connect to both solenoids when the key is in the ON position. The solenoids are operated by the ECM by grounding the second wire from each solenoid to the ECM. As long as the key is in the ON position, connect a ground to the green/red wire on the canister vent shut valve and verify that it is functional by using a handheld vacuum pump that holds vacuum.

Then, on the bypass solenoid’s blue/red wire, repeat the procedure as described above.

If the system continues to set a code after the solenoid has been replaced, an EVAP simulation test should be performed.

EVAP simulation test procedure

Ground both the canister vent shut valve and the bypass solenoid at the same time to ensure that they are both operational. Connect the green wire of the fuel tank pressure switch (FTP) to the leads of a digital multimeter. Remove the clamp from the hose that connects the 2-way valve to the gasoline tank. Then you may start the car. The gasoline tank pressure sensor should generate voltage in order to signal that a vacuum is being taken from the fuel distribution system. Continue the test until the gasoline tank pressure sensor registers between 1 and 1.5 volts on the digital multimeter.

If the voltage rises, it is necessary to investigate a leak in the EVAP system.

With a bi-directional scan tool, you may direct the functioning of valves from the scan tool itself.

Parts for Honda P1457

Honda service bulletin 08-016 includes a list of revised replacement components, including: EVAP Solenoid Valve (Fuel Vent Module) Kit: Civic –06172-S5A-305, H/C 8808198, EVAP Solenoid Valve (Fuel Vent Module) Kit: Civic –06172-S5A-305, H/C 8808198, EVAP Solenoid Valve (Fuel Vent Module) Kit: Civic –06172-S5A-305, H/C Contains valve, fuel vent tubes A and B, pressuresensor tubes A and B, as well as three-way joint (includes valve, fuel vent tubes A and B).

Vehicle Identification Number (VIN) 06172-S9A-305, H/C 8808206 Valve, fuel vent tubes A, B, C, and D (also includes pressure sensor tubes B and C), vacuum chamber, 3-way joint, two tube clips, and a wire clip are all included.

1771 S84 004, H/C 5433545 17711 S84 004 Gasoline Pulsation Damper Washer (for CR-V only): 16705-PD1-003, H/C 1855675 A total of eight propeller shaft bolts (CR-V 4WD only) are required. 90113-S10-000, H/C 5333125, 2019 Rick Muscoplat is a professional musician. Rick Muscoplat posted a blog entry on

Tech Tip: CR-V’s Check Engine Light is On with Trouble Code P1457

The check engine light is illuminated on a customer’s 2003 Honda CR-V EX 2.4L, and the vehicle’s problem code is P1457. An EVAP system leak on the charcoal canister side of the system is the cause of this fault code; hence, it is shown as EVAP. This might be caused by a clogged purge line, a clogged evaporative canister vent shut valve, a clogged bypass solenoid/two-way valve, a clogged purge solenoid, and/or a clogged purge solenoid. Customer Complaints: The check engine light is illuminated on a customer’s 2003 Honda CR-V EX 2.4L, and the vehicle’s problem code is P1457.

  • More information is available by clicking here.
  • Tips for the trade: On this vehicle, the bypass solenoid and the two-way valve are integrated into a single unit.
  • The bypass solenoid is under the cover, right close to the canister.
  • Make that the line connecting the purge solenoid to the canister is not obstructed in any way between the solenoid and the canister.
  • 2.
  • If there is power to both solenoids, the second wire is the wire that will be grounded by the engine control module in order to regulate the solenoid.
  • Backprobe the white/red wire on the CVS valve, ground it, and test that the valve will shut and maintain vacuum.
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Alternatively, if either solenoid fails, the solenoid should be replaced and the code should be reset.

For the EVAP simulation test, ground both the CVS valve and the bypass solenoid at the same time.

Wait until the pressure sensor registers between 1 and 1.5 volts before stopping.

If the voltage rises, it’s time to hunt for a leak in the circuit.

When completing this test, make sure that the hose connecting the two-way valve and the gasoline tank is clamped. When there is no vacuum or pressure in the system, the normal FTP sensor voltage is 2.5 volts. The image is courtesy of IDENTIFIX. For further information, please see the website.

Is p1457 realistically ever the the fuel cap?

Originally Posted bymanfredww1 on the internet That is, in fact, the part. Sorry if the names are making you a little dizzy. It was changed this morning, and I went back to inspect it this afternoon; all of the hoses around the canister, as well as everything else, felt and looked OK. I utilized a Dorman 911-762 orcanister vent solenoid, which has received positive feedback. I might spend a little more money for a real component, but I don’t think it will make a difference. Some people may inform you that only original equipment manufacturer (OEM) components can repair your problem.

  1. However, I agree with you that just swapping out the Dorman component with a Honda part is unlikely to resolve the problem.
  2. When I received a P1457 error number, I did exactly what you did and simply changed the valve (I call it the canister vent shut valve, not the bypass valve).
  3. I then replaced the canister with a new one and deleted the previous code.
  4. It’s been about a year since there have been any EVAP codes.
  5. As an added precaution, I purchased brand new screws to secure the CVS valve to the canister rather than trying to re-use the old ones.
  6. That didn’t accomplish anything.

98-99 P1457 Evap

Thanks to the information on this site, I was able to get my 1998 Honda accord repaired. Thank you, JimBlake, for your postings, which are quite helpful! My vehicle has a check engine light illuminated with the number 1475. I had someone repair the shut vent valve initially (which cost $50+$100), but the CEL continued to illuminate. Repairingstore looked it over again and determined that three parts were in need of replacement: the fuelpressure sensor, the two-way valve, and the bypass solenoid.

  1. I recently purchased the solenoid from an internet retailer for around $95, which included tax and delivery.
  2. So I was able to get those two washers out of the way in approximately 20 minutes.
  3. After the repair, I’ve driven around 200 miles and everything is working well, with no CEL.
  4. (I believe it is coming from the tank side pipe, and because the solenoid was not operating, it is present.) I don’t observe any cracks or leaks outside of the two-way valve, which is made of plastic and hence not easily damaged.
  5. As a result, I believe it is satisfactory.
  6. For individuals who are experiencing the same EVAP system leak and receiving the P1457 error code, I recommend the following: First, examine those hoses beneath the car, unhook them one by one, and see if there’s anything unusual with any of them.
  7. (Because of the tank side hose, gas will enter the EVAP system, including those valves.) It is really simple to accomplish this.
  8. You may also put them through their paces by reading JimBlake’s and others’ postings.

$40 was plenty for me to have someone smoke the car and restrict the partstoreplace. You may then pick which electrical items to replace as a consequence of the results (for the salt snow area pl). There was no need to replace the two-way valve in my situation. I wish everyone the best of luck!

P1457 Code – What Does It Mean & How To Fix It

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P1457 Meaning

Modern automobiles release gasoline vapor through the use of the EVAP system. Furthermore, the P1457 error code is associated with this EVAP system. The P1457 code, on the other hand, may differ depending on the manufacturer and type of the car in question. Honda and numerous other manufacturers, on the other hand, coded the EVAP system fault with the P1457 code on their vehicles. The EVAP system aids in the emission of burned gasoline vapor from the engine. This system is made up of two pieces: a canister and a tank.

  1. Toxic fumes emitted by the Engine are not discharged into the surrounding environment directly.
  2. After that, the steam is returned to the Engine through the tank section.
  3. In addition, when the automobile generates the P1457 error code, it indicates that there is a minor leak in the canister of the engine.
  4. When the leak is significant, another error code is displayed.
  5. With the Innova 5510 gadget, you have a completely professional OBD scanner that is also the greatest ABS code reader on the market.

How serious is the code?

The P1457 problem may be classified as a medium-level problem. Because of this issue, you will not have any difficulties when driving the vehicle. However, because the gasoline system is leaking as a result of this error code, it may result in further difficulties down the road. Additionally, the P1457 fault will diminish the vehicle’s mileage, resulting in the emission of toxic gases from the vehicle. In order to avoid a big problem, correct it as soon as possible.

Causes of the P1457 code

There are a variety of factors that contribute to the complexity of the EVAP system and can result in P1457 mistakes. As a result, the most likely reason is shown below.

  • If the car does not have a gasoline cap, this error number will be shown. It is caused by the incorrect gasoline cap being used in the vehicle. It is possible to receive the code P1457 if there is a problem with the vent valve. It’s possible that this problem is caused by the filler cap’s loose fit. This issue can arise when EVAP canisters are damaged
  • However, it is rare. It may arise as a result of a purifying solenoid failure. Furthermore, a defective pressure sensor in a gasoline tank might be the source of the error code. The p1457 error code will appear if the vent valve on the canister is broken or jammed open. It should be noted that this problem will occur even if the gas cap is not present. It will appear even if there is a leak in the vacuum line of the canister
  • This code will appear. Additionally, it indicates whether or not there is a leak in the vacuum line of the canister.

There may be an issue with the vehicle’s fuel cap, in which case this error number will be shown. Apparently, the incorrect gasoline cap was used in the vehicle. The code P1457 may be shown if there is a problem with the vent valve. A loose fit of the filler cap may be to blame for this issue. It is possible for EVAP canisters to become faulty. Error in the purifying solenoid can cause this to occur; Furthermore, a defective pressure sensor in a gasoline tank may be the source of the issue code.

This issue will occur even if the gas cap is not present; in addition, Even if there is a leak in the vacuum line of the canister, this code will be generated.

Symptoms of the P1457 code

When the P1457 error code is triggered, the engine light illuminates, just as it does when the car’s other faults do. In most cases, this is not a concern when it comes to automobile handling. The engine can stall or shut down on a regular basis, however this is rare. It is also possible that a leak in the EVAP system will cause a slight odor of gasoline to be released into the atmosphere. In many circumstances, the P1457 problem is characterized just by the illumination of the engine light, with no accompanying symptoms.

How to fix P1457 code

First and foremost, you must scan the vehicle using a reputable OBD2 scan tool. In this scenario, you must make use of an OBD of high grade. After scanning with the OBD scanner, look for any error codes other than P1457 that may have been generated. Then you’ll be able to see a drive after you’ve cleared the P1457 issue. After you’ve given the automobile a test drive, re-examine it. Also, keep an eye out for any additional fault codes that are associated with the P1457 or the EVAP system. If another error code appears, the situation might become quite serious.

This error number is frequently shown when there is an issue with the gas cap.

Make a visual inspection of the connecting points to check if there are any leaks or weak places in them.

Immediately take the vehicle to a qualified technician if there are any leaks.


  • If there is an issue with or damage to the valve, it should be replaced. Even if there is an issue with the gas cap, it should be replaced. If there is any kind of leak anywhere in the EVAP system, it must be repaired or replaced immediately. Finally, because the EVAP system’s structure is rather sophisticated, it is recommended that you seek the assistance of a qualified technician.

Common Mistakes

Because the EVAP system’s structure is extremely complicated, identifying the root cause of the P1457 problem has proven to be a difficult task. P1457, on the other hand, can often solve things quite fast and inexpensively. You can usually fix this problem by simply changing valves, gas caps, and rubber hoses, which is what most people do. Many individuals are on the lookout for direct leaks, which are extremely difficult to locate and repair. It’s something you should avoid at all costs. In addition, the P1457 error code is most often caused by a defective sensor in the vehicle’s fuel system.


P1457 is an issue of a moderate severity. So don’t stress about it and just take your car to a reputable repair. Additionally, after taking the fuel, you must properly secure the gas cap. This is due to the fact that if the gas cap is not properly secured, moisture can enter the fuel system and cause harm. Finally, drive cautiously and maintain your vehicle on a regular basis.

2002 Honda Accord 2.3 throwing P1457 code, what is it?

The original post was made by phootbag. While I intend absolutely no offense to the initial poster, I must point out that diagnosing an EVAP DTC is not as straightforward as diagnosing a flat tire. The ability to work with a number of tools as well as a full grasp of how to utilize each one will be expected of you. Because of the intricacy of the system and your present lack of knowledge of the system, you will require a significant amount of time. Unless a repair was unsuccessful, the failures are unlikely to recur on the same vehicle.

There has been no offense taken.

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On this P1457 issue, I’ve read many other H-T posts, one of which indicated a $600 estimate from the Honda dealer for the diagnosis and repair of the EVAP system.

The automobile will be taken to a local shop and I will pay them to fix the problem if this does not address the problem.

I have not yet obtained a copy of the manual, therefore I am unable to assess the difficulty of changing the two-way valve. Where can I find a list of the 60-step procedure? Is this flow chart included in the electronic searchable handbook that is being auctioned on eBay?

Honda Civic P1457: EVAP Leakage (Canister System)

P1457 is a problem code that is frequently seen in Honda automobiles. The fact that it is a Honda-specific code implies that it will have the same meaning in every car built by the company (including Acura). There is a leak originating from the EVAP canister system, as shown by the code P1457 on the instrument panel. It is usually caused by a problem with the gas cap, or by the failure to tighten it all the way down. There are a variety of different conditions that might contribute to it. We’ll go through them in further detail below.

It simply takes a minute to replace them, and they are quite inexpensive.

P1457 Symptoms Honda Civic

P1457 is characterized by the smell of gasoline and the presence of the check engine light. Essentially, it is informing you that the Civic’s diagnostic computer believes the EVAP leaking is originating from the gasoline tank, which is why beginning with the gas cap is a sensible choice.

Honda Civic P1457 Causes

As previously indicated, the error code P1457 is frequently produced by a malfunctioning, loose, or missing fuel cap. Start by taking a look at it. Is the seal even and smooth in appearance? Is there any evidence of dry rot present? Before you begin troubleshooting the EVAP canister and system, take a close look at it. If that isn’t the case, the EVAP system itself is frequently at blame. Every model year will undoubtedly have its unique set of conditions, but these are the most frequent causes of P1457 in the Honda Civic in general, regardless of the year you are using.

  • There are several possibilities for why the code was thrown.
  • Here is an excellent video that demonstrates how agas cap may result in problem codes.
  • It’s possible that you’re receiving a notification telling you to tighten the gas cap.
  • Fuel filler neck/input/pressure sensor– Take a check at the fuel filler neck to determine if there is any damage or debris that might be preventing the fuel cap from creating a tight seal.
  • It will be necessary to use an O-ring to connect the gasoline filler neck to the gas tank.
  • In addition to the gasoline tank pressure sensor, this code can be triggered by other sensors, albeit this is not very common.
  • EVAP leaks are frequently accompanied with codes such as P0455, P0456, and P0457.
  • Each of them indicates a different size leak, and that is the only variation between them.

Listed below is a video demonstrating how to test the EVAP vent canister Valve on a Honda manufactured car using the P1457 code:


The majority of the time, changing the gasoline cap will resolve the P1457 error. It is possible that the car will take some time to reset the code. Make careful to give it a few minutes of driving time before inspecting the fuel filler neck or checking the exhaust gas recirculation system. If you have anything to contribute, please leave a remark in the section provided below. Wishing you the best of luck! Similar:P1456

Tech Tip: Honda MIL Comes On with DTC P1457 Set

The EVAP solenoid valve (fuel vent module) may be obstructed or limited if you come across a Honda with the MIL turned on and DTC P1457 (EVAP control system leakage) shown on the dash. Installing an EVAP solenoid valve kit will remedy the situation. More information is available by clicking here. This applies to: Honda Civic 2/4-door models from 2001 to 2005. Civic 3-door models from 2002 to 2005 are included. Civic Hybrid ULEV models from 2003 to 2005 are all available. 2002-2004 Honda CR-V – all models Symptom: DTC P1457 is shown on the MIL’s display (EVAP control system leakage).

  • Installing an EVAP solenoid valve kit is the recommended course of action.
  • – Part number 17711-S84-004 Only the CR-V is equipped with the Fuel Pulsation Damper Washer (P/N 16705-PD1-003).
  • Diagnosis: First, connect the HDS to your DLC (data link connector) and look for error codes (DTCs).
  • The DTC should be cleared before moving on to step 2.
  • 2.
  • Was the EVAP solenoid valve found to be functional?
  • You should use Repair Procedure A instead if you’re working on a Civic.

Repair Procedure A: This is the first step in the repair process.

Lower the fuel pressure to a safe level.

Remove the gasoline tank once it has been drained of petrol.

Disconnect the EVAP solenoid valve (as shown in Fig.

– Discard gasoline vent tube B, as it will not be needed again.

– Disconnect the 2P connector from the solenoid valve of the EVAP system.

The bolts will be re-used in the future.



Replace the old EVAP solenoid valve with the new one, using the original bolts.


Replace the gasoline tank unit with a new base gasket and a new locknut once it has been removed.

Replace the fuel line to the tank with a new fuel feed retainer and reinstall the fuel line.

Refill the tank with the fuel that was withdrawn in step 2 of this procedure.

Lower the fuel pressure to a safe level.

Remove the gasoline tank once it has been drained of petrol.

Remove the EVAP canister from the system.

– Discard gasoline vent tube C, as it will not be needed again.

– Disconnect the 2P connection from the computer.

The bolts will be re-used in the future.

The valve will not be repurposed in any way.

5, attach the tubes, vacuum chamber, joint, and clips included in the kit to the new EVAP solenoid valve using the instructions included in the package.

Using the original bolts, attach the replacement EVAP solenoid valve to the EVAP canister and secure it in place.

Replace the EVAP canister with a new one.



11. Replace the fuel line to the tank with a new fuel feed retainer and reinstall the fuel line. 12. Refill the tank with the fuel that was withdrawn in Step 2 of this procedure. All data courtesy of ALLDATA.

P1457 code help

Whatever number of cars they work on doesn’t matter because it’s all the same work; it’s not like they go to work every day and get a surprise and work on a different kind of car, different models, but they are all Hondas; they don’t get chevys, fords, lexuses, Mercedes, or any other makes or models. ‘You don’t even have a tenth of the experience,’ you claimed. You behave as though they are doing anything extraordinary; nevertheless, they are just changing brakes, mufflers, oil, clutches, window motors, checking timing, changing timing belts, changing gas caps, and WHOOPDIE-FUCKIN’-DOING IT.

  1. They just have a computer that they plug in and use to test various things; if I had that machine, I would also be a Honda Technician with EXPERIENCE in the field.
  2. There are some people on this forum and other forums who give out incorrect information; I feel sorry for some people who come on here and other forums and ask what is required for a swap or what ecu, etc.
  3. For this reason, it is necessary to be a professional while giving advise or doing auto repairs.
  4. How Is it possible that I did not know the code?
  5. So I had the scanner and knew what the code was months before I even spoke to anyone.
  6. For first, I was enraged with the Honda dealership, not with anyone on this board; it was not my fault that some jerk Honda Tech felt compelled to defend himself and his position.
  7. Moreover, I am no longer permitted to get enraged by whatever is wrong with my automobile or the dealership.

The fact is that Dick didn’t have to say anything, so why did it make him so upset over my point of view?

That said, I didn’t receive any more support in solving my situation!

It was a private conversation between me and the HONDA TECH, why did you have to bring it up in front of everyone?

Huh, Don’t make things worse for yourself, Fuckin’ Dude.

Don’t fool yourself into thinking you’re cool because you can trash speak.


Ignore what I think of Honda; instead, concentrate on the difficulty that I’m experiencing!

Becasue Obviously, there are still children on this site that like posting for the sake of numbers!

P1457: EVAP Emissions Control System Leakage EVAP Canister System

EVAP Canister System Leakage EVAP Evaporative Emissions Control System Leakage EVAP Canister System is specified as Error Code P1457. This error number is a manufacturer-specific fault code, which means that it does not apply to all vehicle makes and model types. As opposed to that, it only pertains to certain car manufacturers, such as Honda. There are certain differences between one make and model and another in terms of the definition, diagnosis, and repair specifications.


To prevent gasoline tank vapor from escaping into the atmosphere and to allow it to be brought into the engine by the intake manifold vacuum and burnt, the engine’s EVAP (evaporative emission control system) temporarily stores it in the EVAP canister until it can be drawn into the engine and consumed. Aside from that, the ORVR (onboard fueling vapor recovery system) is responsible for storing fuel vapor created during refueling of the EVAP canister. So the EVAP control system can identify component failures and vapor leaks for each component, which helps to increase the leak detection method’s accuracy and frequency of detection, resulting in a more accurate and frequent detection.

There are two types of leak detection: 0.04-inch leak detection and 0.02-inch leak detection.

When there is a tiny leak detected from the EVAP system, the error code P1457 is shown on the screen.

Common Symptoms

This error code, like all other error codes, causes the Check Engine light to illuminate and the code to be stored in the vehicle’s memory system. On the majority of occasions, there are no performance or drivability difficulties with the engine. However, due to the discharge of gasoline vapors, there are usually detectable fuel scents present in the majority of cases. In addition, the leak detection and EVAP control systems have been configured.

Possible Causes

There are a variety of factors that contribute to this code, including:

  • Gasoline cap is missing
  • Incorrect fuel filler cap is being used
  • Gasoline filler cap is obstructed by foreign materials
  • The fuel filler cap remains open or does not close properly. EVAP canister that has a defect
  • A faulty purge control solenoid
  • A faulty fuel tank pressure sensor
  • And other issues.

How to Check

Check the EVAP bypass solenoid valve’s operation. Located under the car, it’s situated on the side of the exhaust gas recirculation system.

How to Fix

This error code is extremely difficult to decipher because to the complexity of the components involved, as well as the large number of possible causes of the problem. In this case, having a professional technician examine and pair it for you is your best bet for success. The majority of the things he will perform are as follows: Replace the solenoid valve that controls the EVAP bypass. Gas cap should be replaced. Replace the canister fuel cap as well as the solenoid. PCV valves should be replaced.

Another possible reason of this code is corrosion, which might enable the EVAP to bypass the solenoid valve and cause the code to appear.

It’s possible that the solenoid will fail if the water contains road salt, which will cause the windings to corrode and cause the valve to fail.

In other cases, the corrosion might be quite severe, resulting in an internal short in the solenoid valve, which would then cause damage to the power control module. If this occurs, both the bypass solenoid valve and the PCM will need to be repaired or replaced.

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