Just had the leather replaced on drivers seat. He took the seat only and when he reinstalled, the airbag light went on. He reset the light. Two days later car is riding very rough, CEL on (sometimes blinking).
Codes P1121 and P0301 came up.

Any suggestions? Related or not?

Thanks

 

P1121 Oxygen sensor heating 2 behind catalytic converter – below lower threshold Possible causes: - Contact resistance - Heating current too high - Interruption in heating circuits - Interruption in sensor signal wiring - Short to B+ (End-stage switched off)

Could be related to the seat work.

It doesn't give me the warm fuzzies to read the airbag light was on after the seat work, probably because the battery wasn't disconnected.

As for the error code my info is there is some wiring related to the O2 sensors behind the driver's seat. You might need to pull the seat to check this wiring is ok.