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Home › Jaguar › 2002 › XJ8 SC › Repair and Diagnosis › Engine Performance › System › Engine Controls - Self-Diagnostics › Diagnostic Trouble Code Identification › DTC P1121: Pedal Position Sensor Circuit Range/Performance › Possible Causes

Possible Causes

PPS cable adjustment incorrect.
PPS to ECM sensing circuits 1 and 2 open, shorted or high resistance.
PPS power supply fault.
PPS reference ground fault.
PPS failure.