I have an S80 T6, 1999 and I just replaced the air filter and the next day I noticed a very uneven idling, almost like the engine was going to die. The following day I got the "check engine" light. Pulled the code today and it says 0134. What can this be? I haven't found anything on this code through this forum, any ideas?

Thanks!

Kimmen

 

I looked up the code in my generic code reader and it says:
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

I also looked it up in VALDIS and it says:
P0134: ECM-280A Front heated oxygen sensor (HO2S) Faulty signal. Intermittent fault
P0134: ECM-280A Front heated oxygen sensor (HO2S) Faulty signal. Permanent fault

Looks like the O2 sensor. Is it possible you forgot to plug something back in when you changed the filter?

George

 

Thanks George!

You know I did disconnect the mass airflow wiring plug to be able to clean out the inside of the housing...I did connect it back though but I will check it to make sure it's securely fastened. Otherwise, I guess I have to replace the O2 sensor. I did a little bit more research on the internet and I guess Bank 1, sensor 1 is the upstream right side one? Can anyone verify that?

Thanks again!

Kimmen