DTC P0123: Throttle Position (TP) Sensor Circuit, High Input: Condition

DTC is set when input voltage from TP sensor is more than 4.8 volts after engine starts. This is a continuous monitor. MIL is illuminated when Powertrain Control Module (PCM) detects malfunction during first drive cycle. Possible causes are:

• TP sensor malfunction.
• Open or short circuit between PCM and TP sensor.
• PCM malfunction.