O2 sensor 1 bank 2 reading zero, code P0135

Hello,

This could be a connection problem between the PCM and sensor. Here is a guide so you can check the connections and the engine oxygen sensor wiring diagrams so you can see how the system works and the wires that need to be checked:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

An exhaust leak can cause this issue because it allows air into the exhaust system causing the readings to go to 0. We should repair the leak first. Can you please shoot a quick video with your phone so we can see what's going on? That would be great. You can upload it here with your response. That way I can tell if the noise is bad enough to cause the problem.

Thanks for the videos. On the first one the O2 sensors are not going to do much when the engine is cold and in closed loop. The bank 2 sensor is flat for sure. I didn't hear too much of an exhaust leak did you fix it or? If the wiring is okay (I would double check it) the PCM is bad. The engine seems to run okay? Get a used/rebuilt unit) Check out the diagrams (below). Please let us know what happens.

If the wiring is good and you changed the sensor and the engine is running okay the PCM cannot monitor the sensor so it must be replaced. The part numbers must match.

Sounds good, please let us know.

Maybe we are barking up the wrong tree. An oxygen sensor will not switch if the mixture cannot be controlled. O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) ... Code P0135 occurs when the sensor needs to be replaced, have you done this? Here is a guide to help:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Also I have seen the MAF sensor cause this issue here is the location so you can check it out. Check out the diagrams (below). Please let us know what you find.

Did you check the wiring from the oxygen sensor to the PCM? If so I would replace all of the oxygen sensors. This is a heater code, also have you check the fuses? This can cause the heater not to work as well.

All of that information in in the first post I gave, the guide shows how to check the wiring and the engine wiring diagrams what wires to test. Please let us know what you find. We are interested to see what it is.