Does anyone have any info on this code. The only info I got from the reader that pulled this was that it was on Oxygen sensor circuit bank 1 sensor 2. I was told this does not necessarily mean sensor is bad? Anyone have this problem? Any Ideas?. Check engine light comes on then goes off after a few days. Any help would be greatly appreciated.

 

Sorry also forgot to mention that the truck is not running/idling rough, actually is running good other than the annoying check engine light.

 

passenger side rear o2 sensor wiring problem. Check for wires rubbing-shorted-cut under the vehile or melted to exhaust system. Remove and re-seat the o2 sensor connector.

 

thanks will take a look to find the problem...

 

After inspecting the wires and connections under the vehicle I could not find anything that was loose, cut, melted, or shorted. Any other ideas would be greatly appreciated. Thanks

 

That is the same 02 sensor I had to replace on my 1996. It is a heated sensor and
apparently the heat feature causes it to fail. It is a pain to replace because or where
it is located but it can be done and should clear the code. Mine didn't have any
driveablity problems but the check engine light was on. Changing it cured my problem.

 

My wife's 04 3.0L Escape has the check engine light on, took it to AutoZone, code read as PO136 Bank 1 Sensor 2. Can someone let me know if this is the post cat monitor sensor on the driver side or the passenger side? Thank you!!!

 

Bank 1 on a transverse Ford engine will be the bank near the firewall. On a longitudinal Ford engine it will be the passenger side (U.S.). Sensor 1 is before the converter, sensor 2 is after the converter.

Keep in mind, as stated above, the code does not necessarily indicate that the sensor is bad, it just means a problem has been identified with the circuit related to that sensor.

-Rod

 

After posting this question I replaced the sensor on the passenger side past the catalytic converter. I then disconnected the battery to clear the codes and since have had no problems and its been well over a month with no check engine light.

 

Not sure if I'm oversimplifying it but I get that error code whenever I run my gas tank too low. After a few days it'll clear of its own accord.