P1121high severityPowertrain
Accelerator Pedal Position Sensor Range/Performance
on 1998 Lexus SC 300 3.0L I6 · RWD
What this code means
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 on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1