Scantool Diagnostics

Engine Control

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

Monitor Scantool Data

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




4. Is parameter displayed within specifications?