P0116 code Honda?


  • | What is P0116 HONDA code meaning? The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM).

What causes P0116 code?

Diagnostic trouble code (DTC) P0116 stands for “Engine Coolant Temperature Sensor 1 Circuit Range/Performance.” This DTC is triggered by the PCM after it detects that the voltage signals relayed by the engine coolant temperature (ECT) sensor fall outside the normal manufacturer-specified range.

How do I know if my coolant temperature sensor is bad?

Bad Coolant Temperature Sensor Symptoms

  1. Check Engine Light.
  2. Poor Mileage.
  3. Electrical Cooling Fans not coming on.
  4. Black Smoke from the Exhaust Pipe.
  5. Difficult Starting Condition.
  6. Engine Overheats.
  7. Poor Idling.
  8. Poor Engine performance.

Where is my coolant temperature sensor located?

The Engine Coolant Temperature Sensor can be located in a few places, depending on the vehicle and its manufacturer. It is most often located close to the thermostat of the cooling system or inside of it. The cooling system is located beneath the air intake pipe and behind the right cylinder.

Can you drive with a bad coolant sensor?

It is possible to drive a vehicle with a faulty coolant temperature sensor as the management system defaults to a static reading. A vehicle’s coolant sensor is a critical component used by the engine management system. It directly affects, cooling and fueling of the engine and therefore affects how the engine performs.

How much does it cost to replace ECT sensor?

To replace the ECT sensor, you are going to pay, on average, $95-$140. How much you pay depends on the type of car you own and where you go for servicing. Each mechanic has their own rates, and they may be getting their parts from a variety of vendors, which can change how much the parts cost you.

How do I fix code P0118?

What repairs can fix the P0118 code?

  1. Repairing or replacing the ECT connector.
  2. Repairing or replacing the wiring open circuit as necessary.
  3. Replacing the ECT with a new sensor.

What is the code P0118 mean?

The onboard diagnostic (OBD) code P0118 is an Engine Coolant Temperature Circuit – High Input malfunction. This code refers to the engine coolant temperature (ECT) sensor. The code is also set if the PCM determines that the ECT sensor resistance is out of specification.

What problems can a bad coolant temperature sensor cause?

Your Engine is Overheating While a failing engine coolant temperature sensor may give a permanent cold signal, it can also malfunction in a way that sends a hot signal when your engine temperature is safe.

Can a temp sensor affect engine starting?

The sensor will not cause a no start. It could cause a hard start and a rich or lean condition only.

Can a coolant temp sensor cause starting problems?

Bad coolant temperature sensor causes cold starting problems But the owner had to pump the pedal to keep the engine running. You can have a bad sensor even without a “check engine” light or trouble code.

How long does it take to replace a coolant temperature sensor?

The actual process of replacing the coolant temperature sensor is extremely simple. However, the difficult work comes in the preparation of the cooling system – both before and after. Tip: This job should only be completed when the engine is cold and has not been running for a minimum of one hour.

Does the coolant temp sensor control the fan?

The sensor works by measuring the temperature that’s being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system. As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.

How many coolant temperature sensors are in a car?

There are two temperature sensors in some vehicles, one to send information from the engine system to the control unit and another from the control unit to the dashboard. The device follows the principle of dependence of potential difference in temperature.

Part 1 -How To Test: P0116 OBD II Trouble Code (Honda 2.2L, 2.3L)

OBD II problem code description P0116 Sensor Range/Performance Issue with the ECT Sensor Usually indicates a faulty thermostat (one that has become jammed open), an overheating problem, or a faulty engine coolant temperature (ECT) sensor, among other problems (although its rare for a failed ECT sensor to set this code). The good news is that there is a means to find out what is going on. The purpose of this tutorial is to go into the intricacies of why your Honda generates a P0116 trouble code as well as to demonstrate how to resolve this diagnostic trouble code (DTC) step by step.

P0116Basics You Need To Know

The engine coolant temperature (ECT) sensor on your Honda’s engine measures the ideal operating temperature range of the engine, which is around 176 to 200°F (80 to 93°C). At this temperature range, your Honda Accord is operating at its most efficient level, allowing it to control/reduce emissions while also providing the highest potential gas efficiency on the highway (as long as there are no other faults present of course). To explain this further, the colder the engine gets, the more fuel the fuel injection computer (also known as the PCM = Powertrain Control Module) must inject into the engine to keep it running smoothly.

See also:  P0440, P0441, P0442, P0446 EVAP codes on GM vehicles?

It is the engine coolant temperature (ECT) sensor that allows your Honda’s PCM to measure the operating temperature of the engine in order to inject more or less fuel, manage ignition timing advance and perform a variety of other functions.

NOTE: It is typical for the coolant temperature to rise to as high as 225 to 227°F (107 to 108°C) before the engine cooling fan is activated.

How The ECT Sensor Works

P0116ECT Sensor Range/Performance Problem does not imply that the engine coolant temperature (ECT) sensor is faulty in every instance. It is beneficial to understand how the ECT sensor functions and reports the coolant temperature of the engine. The engine coolant temperature (ECT) sensor operates in the following ways, in brief:

  1. The engine coolant temperature (ECT) sensor has two wires and measures the temperature of the cooling system.
  1. A 5 Volt direct current (DC) supply is given only when the Key On Engine Off (KOEO) or Key On Engine Running (KOER) is pressed
  2. Power is provided by the PCM
  1. A 5 Volt direct current (DC) supply is given only when the Key On Engine Off (KOEO) or Key On Engine Running (KOER) is pressed
  2. Power is supplied by the PCM.
  • A resistor serves as the ECT sensor (thermistor). Its resistance fluctuates in response to variations in the temperature of the surrounding air
  1. The resistance of the ECT sensor increases in direct proportion to the temperature of the engine coolant. The resistance of the ECT sensor decreases in direct proportion to the temperature of the engine coolant.
  • When the 5 Volts are sent via the engine coolant temperature (ECT) sensor, the resistance of the sensor results in a voltage drop due to its resistance. For the uninitiated, this implies that only a specific quantity of the 5 Volts is allowed to pass through to the Ground wire.
  1. The lower the temperature of the engine coolant, the less voltage is allowed to pass through to the Ground wire (due to the increased resistance of the ECT sensor)
  1. Because of the increased voltage drop, the PCM converts it into a lower temperature value.
  • The higher the temperature of the engine coolant, the greater the amount of voltage that is allowed to pass through to the Ground wire (due to the lower resistance of the ECT sensor)
  1. PCM converts this reduced voltage drop into a higher or lower temperature value as appropriate

Let’s go on to the following subheading now that we have this piece of knowledge.

Symptoms Of A P0116 Diagnostic Trouble Code

When the PCM detects that the engine temperature in your Honda has not reached normal operating temperature, your Honda will not run or perform properly. – It is possible to have one or more of the following symptoms when the engine coolant temperature (ECT) sensor malfunctions:

  1. The check engine light (CEL) is illuminated, and the DTC P0116 is present. The vehicle will fail the state-mandated emissions test. Gas mileage will suffer as a result. No matter how long the engine has been running, the needle on the temperature indicator indicates a cold engine. During the winter, the heater only blasts cold air
  2. The engine has overheated
  3. Hard start and/or prolonged cranking time (after a power failure)
  4. The exhaust pipe is spewing out a thick black cloud of smoke.

In the following subheading, we’ll look at some of the most typical reasons for a P0116 DTC to occur.

Common Causes Of A P0116 Trouble Code

When problem code P0116 is shown, the most typical cause is that the engine is unable to attain its regular operating temperature owing to a faulty thermostat.

In particular, one that has become stuck open or has been removed. The other most often reported reason of code P0116 is a very low level of coolant in the coolant system, which is also fairly common. The following is a more comprehensive list:

  1. The engine does not attain its usual operating temperature because of the following reasons:
  1. A faulty thermostat (which has become jammed open)
  2. A fan motor that has been connected ‘directly’ and is therefore operational at all times when the engine is running
  3. A faulty engine coolant temperature sensor (which is highly uncommon)
  1. A faulty thermostat (one that is permanently closed)
  2. Faulty fan motor (or motors)
  3. There is no coolant in the cooling system
  4. The head gasket has blown.

Let’s turn the page and begin testing now that we have the fundamentals under our belt.

Honda P0116 Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem – Car OBD Codes

The Honda OBD2 Code P0116 is defined as follows: Engine coolant temperature sensor (ECT): A thermistor that changes resistance depending on the temperature of the coolant in contact with it. The ECT sensor will be installed in the coolant route or in the block of the engine. Typically, a two-wire sensor is used. The ECT receives a 5 Volt supply from the PCM (Powertrain Control Module). The other cable is a ground connection. The other is used as a ground for the ECT machine. The resistance of the signal wire fluctuates in proportion to the change in temperature of the coolant.

See also:  Starter Engages by itself or blower stays on with key off - Ford Trucks?

Sensor resistance increases when the engine coolant level is low.

Due of the increased resistance caused by heated coolant, the PCM will detect a high temperature.

This P0116 Honda code will be activated if the system detects a sudden change in voltage that is not consistent with an engine warming up.


The following are some possible symptoms of the OBD code P0116 Honda: If the condition is highly intermittent, there may be no obvious signs; nonetheless, the following symptoms may manifest themselves: Illumination of the MIL (Malfunction Indicator Lamp). Unacceptable driving conditions Tailpipe emits a thick, black plume of smoke. Inefficient use of fuel It is not permitted to idle. It is possible to have stalls or misfires.


Honda OBD code P0116: Causes and Explanations The following are examples of possible reasons of the P0116 Honda code: Thermostat is either missing or jammed open. ECT sensor that is not working properly Signal wire is either shorted or open. a short or an open circuit on the ground wire Inadequate connections in the wiring

Possible Solutions

If there are any other ECT sensor codes present, these should be investigated first. Check the ECT reading with the use of a scan tool. On a cold engine, it should be equal to or greater than the IAT value, or it should be equal to the ambient temperature (outside) reading. Examine the freeze frame data on your scan tool to see if it matches the IAT or the ambient temperature (if equipped). The preserved data should be able to tell you what the ECT reading was at the time of the failure. (Unless you live in Anchorage!) If the preserved information reveals that the engine coolant reading was at its coldest extreme (about -30 degrees Fahrenheit), then this is an excellent sign that the ECT resistance was occasionally high (unless you live in Anchorage!) Determine whether or not there is a short in the ECT sensor ground or signal circuits and make any required repairs.

If there are any, the ECT should be replaced.

Verify that the signal circuit is not shorted to ground and make any required repairs. If everything looks to be in order, warm up the engine while keeping an eye on the ECT for any sporadic leaps high or low. If there are any, the ECT should be replaced.

The OBD2 Code Information Be Applicable For Honda:

Honda’s Urban SUV Concept for 2013 is based on the Honda CR-V. Honda S660 Concept, which debuted in 2013, is a new model. Honda’s 2013 NSX-GT Concept, Honda’s 2013 N-One Concept, and Honda’s 2013 GEAR Concept are all examples of the company’s innovative designs. Honda Civic, model year 2013. Honda CR-Z (2013), Honda Civic (2012), Honda Jazz (2011), Honda Accord (2010), Honda Insight (2010), Honda CR-V (2009), Honda City (2008), Honda S2000 (2008), Honda Accord (2007), Honda Fit (2007), Honda Civic (2007), Honda CR-Z (2013), Honda CR-Z (2012), Honda CR-Z (2013), Honda CR-Z (2012), Honda CR-Z (2013), Honda CR-Z (2012), Honda CR-Z (2013), Honda CR-Z Honda CR-V, Honda Accord, Honda Civic, 2005 Honda Element, 2005 Honda CRV SE, 2005 Honda CRV EX, 2003 Honda Element, 2003 Honda CR-V, 2002 Honda NSX, 2002 Honda Civic Si, 2002 Honda Accord SE, 2001 Honda NSXR Concept, 2001 Honda Model X Concept, 2001 Honda Civic Si Concept, 2007 Honda CR-V, 2007 Honda Accord, 2006 Honda Civic, 2005 Honda Element, 2005 Honda CRV SE, 2005 Honda A variety of Honda vehicles, including the 2001 Honda Civic Concept, the 2001 Honda CR-V and the 2001 Honda Accord Sedan, were on display at the 2001 North American International Auto Show (NAIAS) in Detroit.

Accord Coupe (2001 model year), Honda S2000 (2000 model year), Honda Passport (2000 model year), Honda Insight (1999 model year).


1. The list of vehicle manufacturers on the right-hand side of the display screen. The Honda makes are represented by the ODB-ii codes that are currently in use. 2. Use the search box to look for any other OBD II Trouble Codes that may exist. In the search box, type in the five-character problem codes and hit the “Search” button. Remember that a particularOBD-II code does not always represent the same thing across different vehicle manufacturers, since there are numerous different manufactures specific codes in use.

This is because not allOBD2 codes used by one manufacturer are also used by other manufacturers.

The material included on this website is provided solely for the purpose of providing general information.

If you have any questions or concerns about the repairs on your car, please speak with your mechanic.

2015 Honda CR-V OBD2 Code P0116 ECT Sensor Circuit Range Performance Problem – MyCarSpecs Czechia

Problem with the performance of the Engine Coolant Temperature (ECT) sensor circuit range.

See also:  Harsh shifting Chrysler?

What the P0116 code means

P0116 is an OBD-II generic code that indicates that the engine control module’s (ECM) ECT monitor has detected that the ECT sensor range or sensor performance is not as predicted by the ECM when the vehicle is started from a cold start and then immediately shut down and restarted from a cold start.

What causes the P0116 code?

It is not necessary to modify the ECT sensor setting when a cold engine is started and warmed up.

When the engine is stopped and the next cold engine start is done, the value of the warmed-up engine’s ECT sensor remains unchanged.

What are the symptoms of the P0116 code?

  • The ECM activates the Check Engine Light and enters failsafe mode, which reduces the temperature of the input to 176 degrees Fahrenheit. When the engine is cold, it may be difficult to start, but when it is warm, it will start normally. It is possible that the engine will run rough and hesitate until it has warmed up. Once the engine has warmed up, it should operate near to its regular operating parameters.

The symptoms of a failure are established by the manufacturer’s failsafe ECM scheme for your 2015 Honda CR-V, and they may differ between manufacturers and across 2015 Honda CR-V models.

How does a mechanic diagnose the P0116 code?

  • Inspection for electrical connection, wire, or sensor problems is done visually. Examines and records the codes that have been received, as well as the freeze frame data, to determine when the code has been set. The engine is retested to determine whether any defects are present, and if so, the wiggle test is used to attempt to reproduce the issue. Sets codes P0115, P0117, P0118, or P0125 in conjunction with DTC P0116 at the same time. It is possible that the ECT sensor has an open or short circuit. First and foremost, these codes are diagnosed
  • Removes the thermostat and checks it to ensure that it opens at the correct temperature

Common mistakes when diagnosing the P0116 code

  • Inspection for electrical connection, wire, and sensor problems is done visually. Examination and documentation of codes received
  • Examination and documentation of freeze frame data to determine when the code was set. It retests the engine to see if any flaws are present, or it tries to reproduce the issue by wiggle testing it. This DTC is established in conjunction with DTCs 0116 and 0115, 0117, 0118, and 01125. A short circuit or an open circuit may exist in the ECT sensor. Prior to anything else, it diagnoses these codes. It is necessary to remove and test the thermostat to ensure that it will open at the required temperature

How serious is the P0116 code?

  • The P0116 code will trigger the engine ECM to enter a failsafe mode, which will prevent the engine from starting. Until the engine has been well warmed up, the failsafe mode may cause the engine to operate erratically, with reluctance or rough running
  • However, this is temporary.

What repairs can fix the P0116 code?

  • Thermostat testing and replacement
  • Testing and replacement of any other ECT codes, such as P0115, P0117, P0118, P0119, or P0125
  • Testing and replacement of any other ECT codes

Additional comments for consideration regarding the P0116 code

  • The P0116 code is frequently related with the P0115, P0117, P0118, P0119, or P0125 codes
  • The majority of code P0116 failures are caused by a thermostat that is not functioning correctly.

Need help with a P0116 code?

P0116 is a fault code that appears on the Check Engine Light. SCHEDULE P0116 DIAGNOSTIC APPLICATIONS


***story*** Eventually, I took my car to the local muffler shop (you know, the kind of place where you’ve got to have a V8 or it’ll be considered a piece of shit) where he fixed the exhaust system, which had a leaky flexible tube. Since it eliminated the catalytic converter, I didn’t care who fixed it as long as it was done correctly and quickly. *spit* He welds and *fixes* it for me, and when I get it back, it has a WONDERFUL CEL on it. When he runs the code, it reads ** p0116 **, and that is exactly what I want.

To be clear, there was no CEL on my car when I drove it to the shop.

***Problem*** The P0116 codetemp guage functions well.

Is it necessary to replace the sensor?

Please let me know if you have any suggestions for a solution.

Solution I took my car to the dealership today to have them verify the code one more before I turned on the ECT system.

That is not an ECT issue, to be sure.

I then start my car and look over my o2’s, and sure enough, where the moron chevy man welded, he tucked my o2 extensions out of the way so they wouldn’t drag on the ground anymore.

Leave a Comment

Your email address will not be published. Required fields are marked *