Ever since I had a ported blower, C&L Intake, the SCT Air meter installed, I have been getting a trouble code P1121 at low rpms cruising around town. This trouble code says that the Throttle postion sensor is inconsistent with the Mass air meter. I checked the voltage on my TPS. At idle it is .97 Volts. I also replaced my TPS sensor just to make sure. Has anybody ever seen this trouble code? I am looking for some suggestions an what to do next.

Scott

 

My truck is giving me this. SCT 2800 MAF and a Kenne Bell. Did you ever figure it out?

Jim

 

I just got the same code. But I think my PCM is shot. I'm only getting .068volts at my TPS. Blacjack, is that the only code your getting?

 

I got that code when I used a tune that was not setup for my MAFia.

 

Anybody find out whats causing this, I'm getting the same code?