DTC P2121: Accelerator Pedal Position (App) Sensor Circuit 1 Range/Performance
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P2121 - ACCELERATOR PEDAL POSITION (APP) SENSOR CIRCUIT 1 RANGE/PERFORMANCE
| Description: | The APP sensor fault flag is set for sensor 1 by the powertrain control module (PCM), indicating the signal is out of the normal self-test operating range. | ||
| Possible Causes: |
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| Diagnostic Aids: | An APP1 sensor PID reading may indicate a fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DK . | ||