What does code P1125 mean?

Q: What does code P1125 mean?

Accelerator Pedal Position Sensor Fault. P1125 on a GM vehicle means the powertrain control module (PCM) has detected a fault in the accelerator pedal position (APP) sensor circuit, which translates the driver's foot movement into an electrical signal for throttle control. The computer compares the APP sensor signals against each other and against expected values, and it sets this code when the readings fall outside the programmed limits or become inconsistent.

DTC codes / GM codes / P1125

P1125 · GMAccelerator Pedal Position Sensor Fault

P1125 on a GM vehicle means the powertrain control module (PCM) has detected a fault in the accelerator pedal position (APP) sensor circuit, which translates the driver's foot movement into an electrical signal for throttle control. The computer compares the APP sensor signals against each other and against expected values, and it sets this code when the readings fall outside the programmed limits or become inconsistent.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for GM vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.