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Jeep
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2021
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Cherokee High Altitude, Automatic T/Case Control
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Repair and Diagnosis
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Engine Performance
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System
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2.0L - DTCS P152C To P2172
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DTC Troubleshooting
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P2123-Accelerator Pedal Position Sensor 1 Circuit High
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Set Condition
Set Condition
The Powertrain Control Module (PCM) detects that the Accelerator Pedal Position (APP) Sensor 1 input voltage is above 4.73 volts for 0.08 seconds.