P0742

2017-10-10

Description:

  • The fault code P0742 indicates that the torque converter clutch circuit is stuck in the on position. This fault code typically points to a problem with the torque converter clutch solenoid or its control circuit, which is responsible for engaging and disengaging the torque converter clutch.

Possible Symptoms:

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

  • Decreased fuel efficiency

  • Transmission slipping or hesitation during acceleration

  • Failure to engage or disengage the torque converter clutch

  • Overheating of the transmission

  • Potential limited vehicle performance or drivability issues

Possible Causes:

  • Faulty torque converter clutch solenoid

  • Malfunctioning torque converter clutch control circuit

  • Low transmission fluid level or contaminated fluid

  • Internal transmission damage or mechanical failure

  • Faulty transmission control module (TCM)

  • Electrical or wiring issues in the transmission system

Related Parts:

  • Torque Converter Clutch: The torque converter allows shifting gears in an automatic transmission. It is the equivalent of a clutch in manual transmission system. The torque converter clutch creates a connection between the engine output and the transmission input. Problem leads to decreased fuel economy

Possible Solutions:

  • Test and replace the faulty torque converter clutch solenoid, if necessary

  • Inspect and repair the torque converter clutch control circuit for any issues, such as damaged wires or connectors

  • Ensure the transmission fluid level is correct and free from contamination, and perform a fluid flush if needed

  • Perform a thorough diagnostic of the transmission to identify any internal damage or mechanical issues

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

  • Inspect and repair any electrical or wiring issues in the transmission system

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