Discovery Energy, LLC (Rehlko)

P0642

WarningGeneral

What This Code Means

P0642

Possible Causes

  • •Problem with 5 V sensor power supply circuit. Power supply is less than 4.6 V.

Suggested Actions

  1. 1Check electrical connection at ECM for sensor power supply circuit.
  2. 2Check for sensor power supply circuit shorts to ground.
  3. 3Check for shorts by disconnecting the TMAP and TP sensors. Monitor the sensor power supply while reconnecting the sensors one at a time. If the voltage falls when a sensor is added, replace that sensor. Refer to the Installation and Removal Procedures section.

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