P2121 - Accelerator Pedal Position Sensor Circuit 1 Range/Performance
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P2121 - ACCELERATOR PEDAL POSITION SENSOR CIRCUIT 1 RANGE/PERFORMANCE
| Description: | The accelerator pedal position sensor fault flag is set for sensor 1 by the PCM, indicating the signal is out of the normal self-test operating range. | ||
| Possible Causes: |
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| Diagnostic Aids: | An (APP) sensor PID reading may indicate a fault if available. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to DK: Accelerator Pedal Position Sensor STEP 1 | ||