Code P0136 what it means and how to fix it
 
The OBD-II trouble code P0136 indicates a malfunction in the downstream oxygen sensor (Bank 1, Sensor 2), located after the catalytic converter in the exhaust system.
To fix the P0136 trouble code, you can consider the following  Here are some general steps to consider when addressing the P0136 trouble code:
1. Diagnosis: Use an OBD-II scanner to clear the code and see if it returns. This will help confirm whether it's a persistent issue. Check the sensor's wiring and connections for any damage, corrosion, or loose connections. Additionally, inspect the sensor's heating element for proper function, as a faulty heater circuit can trigger the P0136 code. You may also want to look for exhaust leaks near the sensor, as these can cause incorrect readings.
2. Replace the Oxygen Sensor: If the diagnosis points to a faulty oxygen sensor, replacement may be necessary. This involves locating the downstream oxygen sensor (Bank 1, Sensor 2), typically after the catalytic converter, and removing it using an appropriate oxygen sensor socket. Installing the new sensor and connecting the wiring is the next step.
3. Clearing the Code: After the repair, clear the trouble code using the OBD-II scanner. This will reset the vehicle's diagnostic system and turn off the check engine light, provided the issue has been successfully resolved.
4. Testing: After the repair and code clearing, it's advisable to drive the vehicle and monitor for the return of the P0136 code. If the code doesn't reappear, the repair was likely successful.
It's important to note that troubleshooting and repairing trouble code P0136 can vary depending on the make and model of the vehicle. It is beneficial to diagnostic by one of our certified mobile mechanics with experience with diagnosing and repairing OBD-II trouble codes.