DTC P0120 - Throttle Position (TP) Sensor Circuit Malfunction: Condition

DTC is set when input voltage from TP sensor is less than .1 volts or greater than 4.8 volts when ignition is turned on. Possible causes are:

• TP sensor malfunction.
• Open or short circuit between terminal 3O on Engine Control Module (ECM) and terminal "A" on TP sensor.
• Open or short circuit between terminal 3L on Engine Control Module (ECM) and terminal "B" on TP sensor.
• Open or short circuit between terminal 3F on Engine Control Module (ECM) and terminal "C" on TP sensor.
• Mass Air Flow (MAF) sensor malfunction.