I am running the FJO progressive controller and I think it is causing my car to throw SES light. The code number is p0121 with is TPS range/performance. I just replaced the sensor last summer, so there isn't any reason why it would be bad. Would a bad ground, or some kind of wiring mistake cause this to happen? I really don't want to get a new sensor, I went to autozone and cleared cause i couldn't get hold of my tuner. Any help is appreciated or any more insight.

 

Anyone?

 

sponsers?