Reduced Engine Power P1125 & P2138

[vicnation]

2006 Denali XL - I changed the oil, started the car and the reduced engine power message came up. I pulled the codes - P1125 and P2138. Is this a throttle position sensor or a pedal position sensor issue?

 

[Joseph Garcia]

I cannot personally help you with your question; however, other members on this Forum that are much more knowledgeable than me will chime in.

 

[vicnation]

I took a chance and purchased the accelerator pedal sensor assembly since it was in stock locally. I replaced it, cleared the codes, and have driven it several times. The light has stayed off. While I did not test the old pedal, it appears that it became defective.