CEL code 1126, 1133 and 0154

[hancock1701]

I have had those two codes P1126 and P1133 for a few months now. They would come on every 100 miles after I reset them. Tried to clean the MAF twice. My plan is to test the intake for leaks before I go with a new MAF. However, the car has been running fine with the two codes on.

[Swhitcomb]

I checked it last night. It's P0154. Not sure how that fits in with P1126 and P1133.

[paulv]

Originally Posted by Swhitcomb

I checked it last night. It's P0154. Not sure how that fits in with P1126 and P1133.

Since P0154 is an "Interruption of Signal" on the upstream O2 sensor (Bank 2) this could be a wiring problem (signal or ground) or the O2 sensor itself. Sounds like this problem could also cause the P1126/33.

Regards,
paul...