LLawrence

Hadn't driven the car in months and it was low on fuel.Kicked an 0171,0300,0301,0303.0305 and an 1135 code. 500 miles ago I had replaced the bank one sensor, but had some cam solenoid hiccups, seemingly cured by an oil change.
Pulled the bank one and two upstream sensors. Bank 2 nice and grey, bank one black, as the fuel was just dumping on it according to the data stream. carb cleaner time. Swapped sensors front to rear. Briefly got a 1135 code.
sensor 1-1 is still sticking at.66. no voltage change
Drove the car at 4k rpm for 20 minutes. voltage on 1-1 not moving. Briefly a 1135 but it cleared itself


so next we clean up the maf after dinner

ukrkoz

No, next is to figure out why it was dumping fuel. You Band aided the problem.

carguy07

It's dumping fuel because it's in limp mode.