Maybe a code reader that can show you live data about what the O2 sensor is doing will give you a hint.

 

Ill look into that. Thanks

 

Alright so, i bought a scanner that reads live data and i wasn't getting any voltage from the sensor. So i pulled the replacement Bosch sensor and compared to the OEM one and Bosch had the wiring backwards on the replacement sensor... So i bought an AC Delco sensor and that fixed the issue! Unfortunately there are two "Permanent" codes that my scanner wont erase. Is there any way to circumvent going to the dealer and paying them a 1 hour labor charge ($150)??? I know on some older vehicles you could disconnect the battery for a half hour or so and that would essentially reset the computer. Not sure if that's the case with newer OBDII vehicles. Any help would be greatly appreciated.

 

What are these "permanent" codes? Perhaps they are for a problem hasn't been fixed and is immediately tested.

 

P0138 - Circuit High Voltage Sensor 2
P013A - Slow Response Rich To Lean Sensor 2

I cleared the codes last night and the CEL went away and has stayed off so far. I had a friend tell me that this is typical and usually after 20-30 key cycles the computer will figure out that they aren't an issue anymore and go away. Lets hope that's the case.

 

It depends on the specific code. Some are immediate, some need multiple key cycles, and others need mulitple key cycles and specific things to happen for the code to be cleared (besides the problem being fixed).