P0742
Torque Converter Clutch Circuit Stuck On
Generic code
Transmission System
High severity
Hard repair
Free on OBD DashX
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What P0742 means
- 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
Free on OBD DashX
P0742 on OBD DashX
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