P1121
Accelerator Pedal Position Sensor Range/Performance
2002-2010 Lexus SC 430 4.3L V8 🇨🇦
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
- 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
P1121 on Other Vehicles
Common Questions
What does code P1121 mean on a 2002-2010 Lexus SC 430?
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 Lexus SC 430?
Common symptoms of P1121 include: CEL, Erratic throttle, Surging, Reduced power.
What causes P1121 on a 2002-2010 Lexus SC 430?
Common causes of P1121 include: Faulty APP sensor, Intermittent connection, Floor mat interference, Faulty ECM.