Hi I have a 02 S I'm getting two codes. they are; P2096 Post Catalyst Fuel Trim System Too Lean Bank 1, and P2270 O2 Sensor Signal Stuck Lean Bank 1 sensor 2. I have OBX headers and a after market exhaust. both have been on the car about a year. I'm not sure if its a leak in front of the post cat O2 sensor or a bad cat or a bad O2 sensor. Can any help Thanks Lee :mad2:
FWIW, I got the second code after my stock header cracked at the weld below the pre-cat and was leaking badly.
Thanks I haven't got under the car to check for leaks yet. The check engine light came on a few days ago. I didn't have time to check it at the time, after a few trips it went out. The CEL came back on tonight. The car was cold and I had only gone a few miles, as soon as on got on the highway it came on again.
I checked for leaks today did not find one, changed the oil, ran the car the light is out. Must be a short.
Check the wiring to the O2 Sensors to make sure they are not rubbing on the header or heat shielding.
im without a cat. and having same issues. At first it was cat effeciency code and p0130 o2 sensor circuit(bank 1 sensor 1). I put an L spacer in my 2nd o2 sensor to clear out the effeciency code and now i have p0130 still and a p2270 o2 sensor signal stuck lean bank 1 sensor 2