P0742
Torque Converter Clutch Circuit Stuck On
P0742 is an OBD-II diagnostic trouble code meaning: Torque Converter Clutch Circuit Stuck On. Common causes: faulty gas turbine blocking solenoid, damage to the wiring in the control circuit. Estimated repair cost: $33–167.
Symptoms
- Engine stalls when stopped
- Gear shifting problems
- Floating engine speed
- Increased fuel consumption
- Transmission overheating
Causes
- Faulty gas turbine blocking solenoid
- Damage to the wiring in the control circuit
- Mechanical fault of the torque converter
- Transmission control module (TCM) problems
- Contaminated or low transmission fluid level
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the gas turbine engine blocking solenoid
- Check the gas turbine engine blocking control circuit for opens and short circuits
- Scan the transmission control module for other errors
- If necessary, replace the torque converter
Related codes
Error P0742 by Vehicle Brand
FAQ
What does the P0742 code mean?
P0742 is an OBD-II diagnostic trouble code that indicates: Torque Converter Clutch Circuit Stuck On
What causes a P0742 error code?
The most common causes of P0742 include: Faulty gas turbine blocking solenoid; Damage to the wiring in the control circuit; Mechanical fault of the torque converter; Transmission control module (TCM) problems.
How do I fix a P0742 diagnostic trouble code?
To fix P0742: Check the level and condition of the transmission fluid. Diagnose the gas turbine engine blocking solenoid. Check the gas turbine engine blocking control circuit for opens and short circuits. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0742?
Do not drive — repair immediately
How much does it cost to fix P0742?
The estimated repair cost for P0742 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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