P1120
Accelerator Pedal Position Sensor Circuit
2003-2008 Toyota Matrix 1.8L I4
High SeverityPowertrain
Description
The ECM detected a malfunction in the APP sensor circuit that communicates throttle demand.
Symptoms
- CEL
- Reduced power
- Erratic throttle
- Engine may not rev
Common Causes
- Faulty APP sensor
- Damaged wiring
- Corroded connector
- Faulty ECM
Diagnostic Steps
- Test APP sensor voltage
- Inspect connector
- Check wiring continuity
- Test with scan tool
Repair Notes
Replace APP sensor or repair wiring.
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
P1120 on Other Vehicles
Common Questions
What does code P1120 mean on a 2003-2008 Toyota Matrix?
P1120 stands for "Accelerator Pedal Position Sensor Circuit". The ECM detected a malfunction in the APP sensor circuit that communicates throttle demand.
What are the symptoms of P1120 on a Toyota Matrix?
Common symptoms of P1120 include: CEL, Reduced power, Erratic throttle, Engine may not rev.
What causes P1120 on a 2003-2008 Toyota Matrix?
Common causes of P1120 include: Faulty APP sensor, Damaged wiring, Corroded connector, Faulty ECM.