Accelerator Pedal Position System
2004-2007 Buick Rainier 4.2L I6 🇨🇦
Description
The PCM detected a malfunction in the Accelerator Pedal Position (APP) system. The APP system includes multiple sensors that track driver throttle demand.
Symptoms
- Check Engine Light
- Reduced Engine Power mode
- Loss of throttle response
- Vehicle may not accelerate
- Limp mode
Common Causes
- Faulty APP sensor assembly
- Damaged wiring to APP sensor
- Corroded APP connector
- Floor mat interfering with pedal
- APP sensor out of calibration
Diagnostic Steps
- Test APP sensor voltages at rest and full pedal
- Inspect APP sensor connector
- Check for floor mat interference
- Monitor APP readings with scan tool
- Compare APP sensor 1 and 2 readings
Repair Notes
Replace accelerator pedal position sensor assembly. Check for interference at pedal.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1125 on Other Vehicles
Common Questions
What does code P1125 mean on a 2004-2007 Buick Rainier?
P1125 stands for "Accelerator Pedal Position System". The PCM detected a malfunction in the Accelerator Pedal Position (APP) system. The APP system includes multiple sensors that track driver throttle demand.
What are the symptoms of P1125 on a Buick Rainier?
Common symptoms of P1125 include: Check Engine Light, Reduced Engine Power mode, Loss of throttle response, Vehicle may not accelerate, Limp mode.
What causes P1125 on a 2004-2007 Buick Rainier?
Common causes of P1125 include: Faulty APP sensor assembly, Damaged wiring to APP sensor, Corroded APP connector, Floor mat interfering with pedal, APP sensor out of calibration.