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 when ignition is turned on, or when TP sensor voltage is not within normal range when engine is running. Possible causes are:

• TP sensor malfunction.
• Open or short circuit between Powertrain Control Module (PCM) and TP sensor.
• Mass Airflow (MAF) sensor malfunction.
• PCM malfunction.