Originally Posted by Lowball
I got the same code after getting re-tuned for 95 oct. I kept getting P0171. I'm planning on replacing the A/F sensor in the passengers side exhaust header. My tuner spoke with Ecutek and they said that that code seems to come up when that sensor starts going bad...
You guys know if that is true or not???
I replace the sensor and still got the code. Not sure what else it could be