DTC Troubleshooting: P2121 (3.5L Engine) (2025): Notes

DTC P2121  : Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Out of Range

How to use this service information .

NOTICE: 

Before you troubleshoot, review the How to Troubleshoot - Refer to: How to Troubleshoot the Fuel and Emissions Systems (3.5L Engine) or How to Troubleshoot the Fuel and Emissions Systems (3.0L Engine) .