P1121
Accelerator Pedal Position Sensor Range/Performance
2003-2008 Toyota Matrix 1.8L I4
High SeverityPowertrain
Description
The APP sensor signal is outside expected range or not performing correctly.
Symptoms
- CEL
- Erratic throttle
- Surging
- Reduced power
Common Causes
- Faulty APP sensor
- Intermittent connection
- Floor mat interference
- Faulty ECM
Diagnostic Steps
- Monitor APP sensor live data
- Wiggle test connector
- Check pedal travel
- Test voltage range
Repair Notes
Replace APP sensor.
Other Powertrain Codes
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P1121 on Other Vehicles
Common Questions
What does code P1121 mean on a 2003-2008 Toyota Matrix?
P1121 stands for "Accelerator Pedal Position Sensor Range/Performance". The APP sensor signal is outside expected range or not performing correctly.
What are the symptoms of P1121 on a Toyota Matrix?
Common symptoms of P1121 include: CEL, Erratic throttle, Surging, Reduced power.
What causes P1121 on a 2003-2008 Toyota Matrix?
Common causes of P1121 include: Faulty APP sensor, Intermittent connection, Floor mat interference, Faulty ECM.