Throttle Position Sensor: Testing and Inspection

When the PCM detects a malfunction with the Throttle Position (TP) sensor circuits, the following Diagnostic Trouble Code (DTC)s will set:

^ DTC P0121 circuit performance
^ DTC P0122 circuit low.
^ DTC P0123 circuit high.

Refer to System Diagnosis / Diagnostic Tables for testing information. Testing and Inspection