P0737

2017-10-10

Description:

  • The fault code P0737 indicates a problem with the engine speed output circuit in the transmission control module (TCM). This fault code typically points to an issue with the wiring, connectors, or the TCM itself, which is responsible for monitoring and controlling the engine speed signal.

Possible Symptoms:

  • Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated

  • Incorrect or erratic engine speed readings

  • Transmission shifting issues or incorrect gear selection

  • Harsh or delayed shifting

  • Decreased fuel efficiency

  • Potential drivability issues or limited vehicle performance

Possible Causes:

  • Faulty engine speed sensor

  • Wiring or connection issues in the engine speed output circuit

  • Malfunctioning transmission control module (TCM)

  • Damaged or corroded connectors

  • Faulty crankshaft position sensor

  • Electrical or communication issues within the TCM system

Related Parts:

  • Output Speed Sensor: The output shaft connects the wheels to the gearbox. Output speed sensor monitors the speed at which the output shaft is rotating. This car's malfunctioning sensor will lead to reduced performance & poor acceleration

Possible Solutions:

  • Inspect and test the engine speed sensor for proper functionality, and replace it if necessary

  • Check the wiring and connections in the engine speed output circuit for any damage, loose connections, or corrosion, and repair as needed

  • Test the transmission control module (TCM) for proper functionality and replace it if necessary

  • Inspect and clean or repair any damaged or corroded connectors

  • Test and replace the faulty crankshaft position sensor, if applicable

  • Check the electrical connections and communication lines within the TCM system, and address any issues found

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