Codes P1125 and P2138 on 2004 Pontiac Grand Prix

Asked by Mar 01, 2015 at 03:12 PM about the 2004 Pontiac Grand Prix GT1

Question type: Maintenance & Repair

Get reduced engine power and traction control warning lights.  I've replace the pedal/position sensor and throttle body.

6 Answers

8,830

P1125 - Throttle Position Sensor Intermittent P2138 - Accelerator Pedal Position Sensor Circuit Looks like MAP sensor ... The Manifold Absolute Pressure sensor (MAP sensor)

3 out of 3 people think this is helpful.

Don't think it is the MAP but I pulled it off to check it. Came apart as I was pulling it out. Will replace and see. Had a lot of oily residue on the inside components.

MAP replaced. Still the same codes and reduced engine power and traction control warning lights. I can clear the codes but the come right back up when I put it in reverse.

Hey jerry did u get your problem solved?

No. Any advice uxw?

I'm having the same problems. Did you ever find a solution? I changed the throttle body and accelerator pedal sensor. didn't fix the issue.

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