Hi all, I have a 2012 Sonic LT 1.8 Manual with around 80k miles. About a month ago it randomly popped up with CEL, traction control, and lower power mode code 84. Tried multiple restarts and they stayed on, drove to shop, it was throwing codes P2127, P2128, P2138. Mechanic said it was the sensor in the accelerator pedal and the whole assembly needed to be replaced.
I bought a new assembly on eBay for $20. It looked OEM and fit perfectly. After the swap I disconnected negative from battery and after a few drive cycles all the lights went off. About one week later they all came back after idling for an extended period. Only CEL remained after restart and they did not come back.
Then about 2 weeks later all the lights came back on, now sometimes they will turn off after restart but normally they are always on. If they are off they usually come back soon as I touch gas pedal. Had code reread and this time it’s only P2138. Mechanic said throttle body, so another 80 on eBay and I changed that. All lights remain on after disconnecting battery multiple times they still won’t go away.
I reseated all electrical connections I could find, but not sure where other end of cable from accelerator pedal is, unless it’s directly to throttle body.
Any other ideas? Usually the lights are off (other than CEL) in the morning and come back on after driving for a minute.
I bought a new assembly on eBay for $20. It looked OEM and fit perfectly. After the swap I disconnected negative from battery and after a few drive cycles all the lights went off. About one week later they all came back after idling for an extended period. Only CEL remained after restart and they did not come back.
Then about 2 weeks later all the lights came back on, now sometimes they will turn off after restart but normally they are always on. If they are off they usually come back soon as I touch gas pedal. Had code reread and this time it’s only P2138. Mechanic said throttle body, so another 80 on eBay and I changed that. All lights remain on after disconnecting battery multiple times they still won’t go away.
I reseated all electrical connections I could find, but not sure where other end of cable from accelerator pedal is, unless it’s directly to throttle body.
Any other ideas? Usually the lights are off (other than CEL) in the morning and come back on after driving for a minute.