Guide To P0158 OBD Error Code Solutions

<<See All OBD Codes

The fault code P0158 can be defined as O2 sensor circuit high voltage bank 2 sensor 2. It would refer to a trouble code in the bank 2 sensor 2 of the car oxygen sensor. It is situated near the backside of the exhaust behind the catalytic converter. This code would start appearing when the engine control module would detect the voltage signal of the oxygen sensor has remained in high voltage for too long.

If your sensor has been remaining at a high voltage for a long period of time, then the P0158 fault code would start appearing. The car oxygen sensor is situated behind the catalytic converter. It makes sure to transfer the information to the powertrain control module about the efficiency and released oxygen levels of the catalytic converter. Now when the car engine is running lean, then it would mean that there is more amount of fuel in the exhaust gases than oxygen. If the sensor is in good working condition, then it would switch from low voltage to high voltage.

What causes this problem with the 02 Sensor Circuit High Voltage (Bank 2 Sensor 2)?

• There can be a failure in the rear oxygen sensor
• Faulty rear oxygen sensor heater circuit
• There can be some issues with the Engine coolant temperature sensor
• The problem of shorts, breaks, or exposed oxygen sensor wiring
• There can be excessive fuel pressure
• Necessary power control module update
• There can be failure of the power control module

1. Oxygen Sensor - P0158 code does not really end up spoiling your timing belt, but it might also accompany few Oxygen Sensor issues. We have best Oxygen Sensor with us.
2. Exhaust Parts - Are you facing OBD Error Code P0158? Don’t worry as you can fix this issue with new Exhaust Parts. We care for our customers, that’s why we have Exhaust Parts for every make and model.
3. Catalytic Converter - A faulty Catalytic Converter can cause a lot of issues. It would be nice if you get it replaced on time.
4. Powertrain Control Module - The P0158 code can also arise due to some issues in Powertrain Control Module. So, it is advised to replace them as soon as possible.
5. Coolant Temperature Sensor - Do you remember when was the last time you got your car Coolant Temperature Sensor checked up? A damaged Coolant Temperature Sensor can cause a lot of issues like displaying P0158 code.

For us our customers are everything, and that’s why we will help you to diagnose P0158 code by mentioning some important symptoms below:

Common Symptoms

• The check engine light can start illuminating
• Decrease in the overall fuel economy
• Engine can start running roughly
• Issue of engine idles rough
• The problem of engine stalls

Here are some steps which you should follow to correct this trouble code:

• The rear oxygen sensor should be replaced properly
• The broken circuitry or shorted wires going to the oxygen sensor should be repaired
• If the fuel pressure is abnormal, then you must repair the cause of the abnormality
• The faulty engine coolant temperature sensor should be repaired
• Replacing the power control module if necessary

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of exhaust manifold, shift solenoid, air fuel ratio sensor and many more. Now all your problems would vanish within no time.

• An OBD-II scanner should be used by a mechanic to pull all present trouble codes that have been stored by the power control module
• Make sure that you review the live data for the oxygen sensor on the scanner. They will check the voltage reading to see if the oxygen sensor switches from low voltage to high voltage every few seconds
• When an engine coolant temperature sensor trouble code is present as well, the live data on the scanner is checked for proper engine temperature
• Then the wiring of the rear oxygen sensor should be checked for shorts, breaks, or exposure
• The fuel pressure should be tested to see if it is higher than normal
• Run manufacturer diagnosis procedures on the power control module to determine whether it needs to be replaced or updated

 Common Mistakes When Diagnosing The P0158 Code

• Replacement of the oxygen sensor before considering other necessary repairs
• Not carefully inspecting the wires for any shorts, breaks, or exposure