Scantool Diagnostics

Engine Control
P0642 Sensor Reference Voltage 'A' Circuit Low - Scantool Diagnostics

Monitor GDS Data

1. Connect GDS to Data Link Connector (DLC).
2. Warm up the engine to normal operating temperature.
3. Monitor the "A/C Refrigerant Pressure Sensor" parameters on the GDS.




4. Is parameter displayed within specifications?