[nolimit06]

Hey guys, I sometimes get a engine code after running the car hard (going fast for long periods of time, or just long non stop trips) I have looked up the code but I cannot get any solid info on fixing it. If anyone could help me out I would appreciate it.

Code: P1131
Info: Lack of Upstream Heated Oxygen Sensor Indicates Lean - Bank No. 1

Again not sure what it means but the car does not run any different and seems to run great.

Thanks again for any help you guys may offer.

[shinerstang]

Check your harness going to the upstream O2 sensor. It will be on the bottom of your headers by your tranny. You sensor maybe be going too.