P1120
Accelerator Pedal Position Sensor Circuit
2001-2005 Lexus GS 430 4.3L V8
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
- 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
P1120 on Other Vehicles
Common Questions
What does code P1120 mean on a 2001-2005 Lexus GS 430?
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 Lexus GS 430?
Common symptoms of P1120 include: CEL, Reduced power, Erratic throttle, Engine may not rev.
What causes P1120 on a 2001-2005 Lexus GS 430?
Common causes of P1120 include: Faulty APP sensor, Damaged wiring, Corroded connector, Faulty ECM.