Possible Causes

Malfunction is detected when ECM detects an excessively low or high sensor power supply voltage. Possible causes are:

• TP sensor No. 1 and 2 circuit shorted.
• Accelerator Pedal Position (APP) sensor circuit shorted.
• Mass Airflow (MAF) sensor circuit shorted.
• EVAP Control System Pressure Sensor (EVAP-CSPS) circuit shorted.
• Power Steering Pressure (PSP) sensor circuit shorted.
• Refrigerant pressure sensor circuit shorted.
• Defective electric throttle control actuator.
• Defective APP sensor.
• Defective MAF sensor.
• Defective EVAP-CSPS.
• Defective PSP sensor.
• Defective refrigerant pressure sensor.
• Defective ECM pin terminals.