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Home › Mitsubishi › 2002 › Lancer LS › Repair and Diagnosis › Engine Performance › System › Engine Controls - Self-Diagnostics › Diagnostic Tests › DTC P0123: Throttle Position Sensor Circuit High Input › Troubleshooting Hints

Troubleshooting Hints

The most likely causes for this DTC to be set are:

TP sensor failed or misadjusted.
Open or shorted TP sensor circuit or loose connector.
ECM (M/T) or PCM (A/T) failed.