P0643
Powertrain Codes
P0643 - NISSAN - Sensor Power Supply Circuit Short
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Harness or connectors (APP sensor 1 circuit is shorted.)(PSP sensor circuit is shorted.)(EVAP control system pressure sensor is shorted.) Refrigerant pressure sensor circuit is shorted.) - Accelerator pedal position sensor (APP sensor 1) - Power steering pressure sensor - EVAP control system pressure sensor - Refrigerant pressure sensor
Description
ECM detects a voltage of power source for sensor is excessively low or high.