DTC P0121-04: Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance - System internal failures: Action
- Vehicle Conditions to enable DTC Logging Strategy
- During electric throttle adaption process at ignition ON engine OFF the amplifier is checked
- Check engine control module for additional DTCs and refer to relevant DTC index. Rectify these first
- Check and install a new engine control module, only when diagnosed as failed
- Using the manufacturer approved diagnostic system clear all stored DTCs using the 'Diagnosis Menu' tab and retest