P1121
Accelerator Pedal Position Sensor Range/Performance
2001-2007 Toyota Highlander 2.4L 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
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
P1121 on Other Vehicles
Common Questions
What does code P1121 mean on a 2001-2007 Toyota Highlander?
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 Highlander?
Common symptoms of P1121 include: CEL, Erratic throttle, Surging, Reduced power.
What causes P1121 on a 2001-2007 Toyota Highlander?
Common causes of P1121 include: Faulty APP sensor, Intermittent connection, Floor mat interference, Faulty ECM.