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Home › Jaguar › 2000 › XJR › Repair and Diagnosis › Engine Performance › System › Engine Controls - Self-Diagnostics › Diagnostic Trouble Code Identification › DTC P0121: Throttle Position Sensor Circuit Range/Performance › Monitoring Conditions

Monitoring Conditions

Ignition on.
Battery voltage more than 9 volts.
Slowly move throttle through full range.
Conditions present for more than 40 seconds.