P0739

TCM Engine Speed Output Circuit High

DTC P0739, sometimes indicated as P073900 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the causing tcm engine speed output circuit high.

1. The TCM engine speed output circuit may be high due to a fault in the TCM or wiring.
2. Verify the wiring and connectors are all properly connected.
3. Replace the TCM if it is defective.

  • P0739: TCM Engine Speed Output Circuit High
  • P0739: TCM engine speed – output circuit high
  • P0739 00: TCM engine speed - output circuit high

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