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P0642

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P0642 OBD-II Trouble Code: Sensor Reference Voltage “A” Circuit Low

P0642 means there is an abnormally low voltage reading within the "A" circuit often due too a faulty engine control module or other malfunctions.

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Whats wrong , engine codes p0605,p0842,p0642, and p0401 thrown twice , light front end damage wothout airbag deployment

Hello, thank you for writing in. If the vehicle was in a wreck, the issues are likely independent from each other. One issue seems to be a powertrain control module electrical malfunction. This could be an issue with an input...

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