[silvergts1998]

Does anyone know what this code means and what might be the issue? Is it the O2 Sensor? (Post Catalyst Fuel Trim System Too Lean Bank 1)

Thanks in advance.

 

[mymbfun]

Where did you get the code? All I see is a check engine light when spmething happens?

 

[BBZLC]

Does anyone know what this code means and what might be the issue? Is it the O2 Sensor? (Post Catalyst Fuel Trim System Too Lean Bank 1)

Thanks in advance.

The code description is: Post Catalyst Fuel Trim System Low Limit

 

[RoveRon]

What mods do you have done to car? I have same code and I'm working on finding the culprit. I have LT's.

 

[abss]

Does anyone know what this code means and what might be the issue? Is it the O2 Sensor? (Post Catalyst Fuel Trim System Too Lean Bank 1)

Thanks in advance.

Sorry to bring up old thread, I have the same car & issue was there any solution? Thanks

 

[RoveRon]

@abss what mods do you have to your car? And yes it might be O2 sensors

 

[abss]

@abss what mods do you have to your car? And yes it might be O2 sensors

thanks for responding Roveron, car is stock. To make long story short filled up with Kroger gas (93) and as soon as I start car CEL comes on. Took car to a small independent MB shop to have it looked at. Mechanic states that right rear 02 sensor is bad, so I replaced the sensor. After a few days everything seemed fine, until today CEL return. I hope a member can point me to the right direction in resolving this issue. Thanks.