Jeep P0158? (Best solution)

  • | What is P0158 JEEP code meaning? The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio.

How do I fix error code P0158?

What repairs can fix the P0158 code?

  1. Replace the rear oxygen sensor.
  2. Repair any oxygen sensor wires that have shorted out, are broken or exposed.
  3. Make necessary repairs to remedy the excessive fuel pressure.
  4. Replace engine coolant temperature sensor if it is necessary.

What does P0158 code mean?

When trouble code P0158 is set, this indicates that there is a high voltage (steadily above. 9 volts) for more than 10 seconds indicating a lack of oxygen in the exhaust stream and an abundance of fuel at sensor 2 on bank 2 of the engine.

What causes high voltage on O2 sensor?

The high voltage condition from the O2 sensor is indicating a lack of oxygen in the exhaust or other related problems, such as a leaking fuel injector or a broken up catalyst inside.

How much is a O2 sensor for a Jeep?

Jeep Wrangler Oxygen Sensor Replacement Cost Estimate. Labor costs are estimated between $51 and $64 while parts are priced between $145 and $178. This range is based on the number and age of Jeep Wrangler’s on the road.

What O2 sensor is bank 2 sensor 2?

Diagnostic Trouble Code (DTC) P0158 stands for O2 Sensor Circuit High Voltage (Bank 2, Sensor 2). The O2 sensor 2 is the downstream O2 sensor and it measures the amount of oxygen in the exhaust gases leaving the catalytic converter (cat).

Which side is bank 2 sensor 2?

Bank 2 Sensor 2 is the second sensor on the engine’s exhaust pipe, usually behind the catalytic converter. On Bank 2 means it is at the engine side with cylinders 2, 4, 6, 8, etc.

How do I fix code po430?

What repairs can fix the P0430 code?

  1. Replacing the catalytic converter.
  2. Diagnosing and repairing the engine misfire.
  3. Replacing the fuel injector.
  4. Repairing any mechanical damages in the engine.
  5. Replacing the oxygen sensor
  6. Repairing or replacing the exhaust replaced.

What is the symptoms of a bad O2 sensor?

If your vehicle has a bad oxygen sensor, it could run irregularly or sound rough when it idles. A faulty oxygen sensor can impact your engine’s timing, combustion intervals, and other essential functions. You could also notice stalling or slow acceleration.

How do I fix code P0137?

What repairs can fix the P0137 code?

  1. Replacing the O2 sensor for bank 1 sensor 2.
  2. Repairing or replacing the wiring or connection to the O2 sensor for bank 1 sensor 2.
  3. Repairing exhaust leaks before the sensor.

What can cause a P0132 code?

Code P0132 is triggered when the PCM detects that your heated oxygen sensor reading is too high. This happens when the oxygen sensor voltage stays above a certain threshold for a select amount of time. The code is also triggered if the air-fuel ratio stayed in a rich-biased condition for too long.

How much voltage should an O2 sensor have?

An O2 sensor will cycle between 0.10 to 0.90 or almost 1 volt. An O2 sensor has to reach the 0.8x Volts amplitude mark while at full operation. An O2 sensor also has to reach the 0.1x Volts amplitude mark while at full operation.

When a vacuum leak is created the oxygen sensor voltage should?

11. When a vacuum leak is created the oxygen sensor voltage should: momentarily drop between.

Where is the O2 sensor on a Jeep Wrangler?

The oxygen sensors are in the exhaust pipe between the engine and the catalytic converter on the Jeep Wrangler. You will need a special socket to remove the oxygen sensor, available at most auto parts stores and tool supply stores.

How many oxygen sensors does a 2008 Jeep Wrangler have?

Catalytic Converter With 4 Oxygen Sensors For 2007-2009 Jeep Wrangler 3.8L.

How many O2 sensors does a Jeep Grand Cherokee have?

All four oxygen sensors located in the Jeep Grand Cherokee are different prices and sizes. While you are purchasing your oxygen sensor, ask the store clerk or look online for an oxygen sensor socket.

Jeep Wrangler P0158: Oxygen Sensor High Voltage (Bank 2 -Sensor 2)

In numerous cars, including the Jeep Wrangler, the OBDII code P0158 may be found, and it is one of them. When the following conditions are met, the code is activated:

  • It takes 20 seconds or longer for the voltage at the oxygen sensor to rise over the threshold. The voltage applied to the sensor is too high (a fault with the wiring, imagine short)
  • The O2 sensor itself is faulty

The error code P0158 might also result from a variety of less common issues. We’ll go over them in more detail below. Bank 2 refers to the side of the engine that has the second cylinder in the firing sequence, as seen in the diagram. Sensor 2 is located in the vicinity of the catalytic converter. Here’s a video that might be quite useful in troubleshooting the error code:

Jeep Wrangler P0158 Symptoms

Typically, the sole symptom of P0158 is the presence of the check engine light on the dashboard. In certain circumstances, there may be additional signs and symptoms as well. These are some of the signs and symptoms:

  • Engine has a rough idle
  • The exhaust smells
  • The service light is illuminated
  • The MPG is poor.
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P0158 is nearly never a cause of a breakdown (Chrysler vehicles being the exception). However, like with anything that causes the service engine soon light to illuminate, it is a good idea to get it repaired as soon as it is discovered.

Jeep Wrangler P0158 Causes

The following are the most typical difficulties that result in the Jeep Wrangler receiving the P0158 code. They are provided in a sort of descending sequence from most to least likely to be the source of the problem.

  • One of the most common reasons that P0158 is causing your service engine soon light to illuminate is a faulty oxygen sensor (O2 sensor). Although it may be tempting to replace it straight immediately, it would behoove you to first inspect the wire harness that surrounds it. See the section just below. They are reasonably priced at places like Autozone or Amazon. Problems with Wiring Harnesses – The cable that connects the front and rear oxygen sensors is extremely prone to failure due to corrosion. Due to the fact that O2 sensors are located under the chassis, they are prone to damage from road debris as well as a great deal of exhaust heat, this is the case. In particular, the downstream sensor is vulnerable to this phenomenon. On YouTube, you may learn how to locate a short in a wire harness. Deterioration of the Terminal – The terminal (the socket) to which the oxygen sensor is connected is likewise a rather vulnerable component to damage. You’ll want to double-check that there’s electricity flowing to the device. More information about this may be found straight below
  • Incorrect O2 Sensor – The P0158 code may be shown after you have recently changed your Oxygen sensor, which indicates that the replacement was incorrect or defective.

Wrangler P0158 Diagnosis

One of the most common reasons that P0158 is causing your service engine soon light to illuminate is a faulty oxygen sensor (O2) itself. It would behoove you to inspect the wire harness surrounding it before replacing it, even if it may be tempting to do so straight away. Take a look at the section immediately below. In Autozone or on Amazon, they are reasonably priced; Troubleshooting Electrical Wiring Harnesses A lot of damage may be done to the wire that connects the front and back oxygen sensors.

  • In particular, the downstream sensor is vulnerable to this issue.
  • The Terminal has been damaged.
  • In order to ensure that it receives voltage, you need check the circuit breaker for the device.
  • Sensor for Oxygenation is not working correctly — The P0158 code may be shown after you have recently changed your Oxygen sensor; this indicates that the replacement was incorrect or defective.


Good luck in identifying the source of the P0158 code on your Jeep Wrangler. If you have anything to contribute, please feel free to do so in the comments section below this post.

P0158 02 Sensor Circuit High Voltage (Bank 2 Sensor 2)

O2 Sensor Circuit with High Voltage byDale ToalstonASE Certified Technician article (Bank 2 Sensor 2)

What does that mean?

This diagnostic trouble code (DTC) is a general powertrain code, which means that it applies to any cars that are equipped with the OBD-II diagnostic system. Despite the fact that they are general, the particular repair processes may differ based on the make and model. The catalytic converter is a device that is used to reduce hazardous emissions. In order to maintain appropriate functioning, an O2 sensor is installed behind the catalyst and continuously analyzes the oxygen level of the exhaust after the catalytic converter.

  1. It is possible that a P0158 code indicates a failure at the post-cat o2, which is the second sensor back on bank 2.
  2. The oxygen sensor has four wires that connect to the rest of the system.
  3. When the key is turned off and the engine is turned off, the heating element should be powered by battery voltage on one wire and grounded on the other.
  4. The PCM also serves as a grounding point for the sensor.
  5. This change in resistance has an impact on the 0.5 volts delivered by the PCM.
  6. A rating of 0.1 indicates that the system is fully lean, whereas a reading of 0.9 indicates that the system is fully rich.

An error number of P0158 indicates that the voltage on the signal circuit was greater than normal. NOTE: A post-catalyst oxygen sensor will often switch at a slower rate and more frequently than a front (pre-catalyst) oxygen sensor.


The following are possible symptoms of a P0158 DTC:

  • The MIL (Malfunction Indicator Lamp) is illuminated
  • The engine loses power and misses sometimes
  • It is possible that fuel economy will be reduced. The engine is producing a lot of power.


The following are examples of possible reasons of the P0158 code:

  • Bank 2 Sensor 2 has a bad oxygen sensor
  • Wiring that comes into touch with exhaust components If there are any other codes present, the engine is running rich. Exhaust holes cause the PCM to over-rich the engine, resulting in an excessively high Bank 2, sensor 2 signal. Short circuit to the voltage on the signal circuit
  • PCM is faulty
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Possible Solutions

The condition of the exhaust components should constantly be kept under close observation. Inspect for holes, electrical harnesses that are in touch with the exhaust, and other issues. Start the engine and take note of the voltage reading from the Bank 2 Sensor 2 oxygen sensor. On rear oxygen sensors, if the sensor is sluggish, it may be necessary to boost the idle speed until the sensor begins to switch. If increasing the idle causes the sensor’s voltage to decrease, it is necessary to replace the sensor owing to poor performance.

  1. Unplug the 2,2 o2 sensor when the vehicle is in KOEO (key on engine off) and check for a good ground on both the heater element and the sensor.
  2. A slow sensor can be caused by a lack of heater activity, although this is frequently accompanied by a set of codes.
  3. The scan tool should now show a voltage reading of low or near 0 volts.
  4. Replace the oxygen sensor in bank 2/2.
  5. Make certain that there is no contact with the hot exhaust components of the vehicle.
  6. If the wiring appears to be in proper working order, the preceding wire harness inspections at the PCM connector should be repeated.
  7. If the reading from the 2/2 oxygen sensor now declines, this indicates that there is a wiring fault that is not evident.
  8. Alternatively, you might opt to run another signal line by cutting the troublesome wire and leaving it in the harness.

Related DTC Discussions

  • Codes for a 2005 2500 HD 6.0 P0332 P0158 P00602005 2500HD 6.0 4×4 P0332 P0158 P00602005 2500HD 6.0 4×4 First, I had a code for the O2 sensor on the right bank sensor two, and then I had a code for the right side knock sensor before I could get it rectified. Is it possible that the oxygen sensors may provide a misleading reading? Several P-0332 codes, P-0158 codes, and P-0060 codes may be found on the page. Any pointers on where to begin would be greatly appreciated. Please accept my thanks in advance. 2002 Jeep Liberty does not have a check engine light, however it does have three codes. P0158 P0340 P0443 P0158 P0340 P0443 My 2002 Jeep Liberty Limited Edition is seen above. 3.7L 4×4 with a manual transmission There are no check engine lights on, and the vehicle has all of its power without any issues, but when I connect an OBD11 scanner, it shows three faults. What is the problem? PO158 (02 Sensor Circuit High), PO340 (Camshaft Position Sensor Circuit), and PO443 (Evap Purge Solenoid C
  • 00) are all codes for the same part number: PO158. Jeep Grand Cherokee P0130, P0136, P0152, and P0158 are the model numbers. I have a 2000 Jeep Grand Cherokee (4.7L) that was experiencing the well-known dying out while driving issue. After many hours of study, it appeared that replacing the PCM would have the best chance of resolving the issue. I replaced it with a rebuilt one that I purchased and installed, and the Jeep has not stopped since. I now have ODB codes P0130 and P0136, as well as problem code p0158 for a 2006 Dodge Stratos with 140k miles on the odometer. 2 digits of code The catalytibank 2 position 1 and position 2 sensors, as well as the catalytic converter, have been replaced with po158. pcm voltage is a voltage that is measured in pico-volts (pcm). P0158, P1153, and P1133 codes on a 2000 Chevrolet Silverado 2500 6.0 with 63 volts and no burned wires
  • No other codes on the vehicle. Hello, What I’m dealing with is that my 2000 Chevrolet Silverado is throwing three codes and drives like a hot pile until the check engine light illuminates. P0158, P1153, and P1133 are the codes that I am receiving. I changed both of my front heated oxygen sensors in the hopes of finding a solution before I received the P0158 code. The vehicle has 156k miles on it. O2 Sensor code p0158 and p0160 on a 2006 Hyundai Sonata 3.3. Hello there, everyone! I’d like to ask a question. I have a 2006 Hyundai Sonata 3.3L that was displaying the P0158 and P0160 codes at the time of the incident. The O2 sensor in the Bank 2 Sensor 2 location, according to my code reader, was the problem. P0158 represents high voltage, whereas P0160 represents no activity. It was a simple change out of the B2S2 sensor and a quick reset of the codes using the included tool: 2000 Jeep WJ – P0151 P0158 P0130 P0136 My 2000 Jeep Grand Cherokee (4.7L, Federal Emissions) began exhibiting the well-known stalling while driving behavior a few months ago. When this had happened in the past, replacing the PCM with a rebuilt one (from Solo PCMs) cured the problem – and it also fixed the stalling problem this time around. What has me absolutely baffled is the following: Nissan Sentra P1217 P0507 P0138 P0158 P0117 P0139 P1146 2002 Nissan Sentra P1217 P0507 P0138 P0158 P0117 P0139 P1146 2002 Nissan Sentra Hello, I have a 2002 Nissan Sentra 1.8L that turns over but does not start, and the OBD2 reader indicates that there are eight codes present. P1217 P0507 P0138 P0158 P0117 P0139 P1146 P1217 P0507 P0138 P0158 P0117 P0139 P1146 Just trying to find out what may be wrong with my Dodge Dakota 2001 4.7L OBDII P0158, which is currently parked in my driveway. I’m in desperate need of assistance. Code P0158 for a 2001 Dodge Dakota. Bank 2 Sensor 2 was the source of the original problem. The connection came into touch with the exhaust and melted. Sensor was replaced, and the wiring connector was fixed. It still has the same code on it. Replaced the ECM as well as all four oxygen sensors. I went as far up under the vehicle as I could to examine the wire harness. P0157, P0158, P0161, P1157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P0157, P Suburban 1500 5.7L Obtaining all four of these codes in the scanner while the key is turned on and the engine is turned off. Over the course of the previous three days, the MIL has been lighted throughout at least 400 miles of our journey. Not clear how the O2 sensor can read both high and low oxygen levels at the same time. Do you have any suggestions?
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Need more help with a p0158 code?

If you still need assistance with the P0158 error code, please ask your issue in one of our FREE vehicle repair discussion boards. Please keep in mind that this material is being provided solely for informational reasons. It is not meant to be used as repair advice, and we are not liable for any actions you take in relation to any vehicle. All of the information on this website is protected by intellectual property rights.

Jeep P0158

It is possible to get a Jeep P0158 fault code if the downstream oxygen sensor on Bank 2 malfunctions.

P0158 Heated Oxygen Sensor (Bank 2 Sensor 2) Voltage High is the entire definition of this error code. If you replace the oxygen sensor without performing any diagnostic work on the circuit, you may damage the sensor. I’ve provided a wiring diagram for the Jeep P0158 in the section below.

Possible causes of Jeep P0158

The B2S2 oxygen sensor has failed as a result of pollution, silicone, or water exposure. B2S2 oxygen sensor circuit wire is OPEN or shorted to the voltage supply line. The B2S2 O3 sensor connection is broken, or one of the pins has migrated out of its proper position. The ground circuit for the B2S2 heater is open.

How to test the O2 sensor when you have a Jeep P0158

The electrical link from the downstream oxygen sensor on the Bank 2 side should be disconnected. Turn the key to the RUN position and check the battery voltage on pin 2 to make sure it is not low. After then, make sure that pin 1 has a good ground. Jeep P0158 diagnostics and repair Replacing the connection and restarting the engine is recommended. Backprobe pin 4 and record the voltage of the downstream signal. It should be capable of switching between 2.5 and 3.5 volts. Instead, use the downstream sensor from Bank 1 to replace it if it doesn’t work properly.

If it does not, you have a problem with the wiring harness or the ground connection.

Rick Muscoplat posted a blog entry on

P0158 and P1E0A codes

Bank 2’s downstream O2 sensor’s electrical link must be disconnected by hand. To check for battery voltage on pin 2, turn the key to the RUN position and press the RUN button. Afterwards, make certain that pin 1 has a good ground. Service manual for the Jeep P0158. Start the engine after reconnecting the connection. The downstream signal voltage can be read by back probing pin 4. Switching between 2.5 and 3.5 volts should be possible. Instead, change it out with the downstream sensor from Bank 1 if it doesn’t work properly.

Otherwise, you may have a problem with the wiring harness or the grounding system.

P0158 & P0157 O2 Sensor issues!

Well, I recently had my 6spd tranny replaced under the manufacturer’s warranty (worn bearings). When I bring it home, I’ll do a bing, bing, bing search. The check engine light illuminates! In order to examine the code, I whip out my Superchips programmer, and I receive the following message: ‘P0157/P0158 Low/High Voltage for 02 Sensor Bank 2 Sensor 2.F percent $k me stupid!’ I crawled under the JK to inspect the sensor and discovered that it had been worn somewhat by the driveshaft. Okay, I purchase a new sensor (the final sensor beneath the driver’s side), connect it to the vehicle, and remove the codes.

Bing, bing, bing.

Donkey the Evangelist Let’s connect the programmer to the N percent Ts.

When I tried to delete it again, it appeared again.

No such luck!

Under the hood, is there anything that might have caused the fuse to blow?

After checking for leaks and employing the seafoam brake booster method, I have discovered that there are no exhaust leaks that I can detect, which leaves me perplexed as to what is producing the engine code.

Sensor 2 of the O2 sensor bank 2 ‘Jeep modifications are akin to cleaning your arse with a hula-hoop in terms of effectiveness. It’s a never-ending cycle!’

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