Scantool Diagnostics

P0642 Sensor Reference Voltage \'A\' Circuit Low

Scantool Diagnostics

Monitor GDS Data

1. Connect scantool to Data Link Connector (DLC).
2. Warm up the engine to normal operating temperature.
3. Monitor the "TPS, MAPS, Fuel Tank Pressure Sensor" parameters on the GDS.




4. Is parameter displayed within specifications?