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DTC - Diagnostic Trouble Codes information

P0642

Powertrain Codes

P0642 - VOLKSWAGEN - Sensor Reference Voltage A Circuit Low

Symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

- ECM Short circuit condition - Shorted sensor on 5 volt circuit - Failed ECM

Description

The ECM has detected that the 5 volt reference voltage is too low