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TransmissionSeverity Medium: diagnose soon

P0742Torque Converter Clutch Solenoid Circuit Stuck On

What it means

The torque converter clutch solenoid appears to stay applied when it should be released.

Symptoms

  • Harsh, late or missing shifts
  • Transmission stuck in one gear (limp mode)
  • Check engine or gearbox warning light

Common causes

  • Solenoid stuck mechanically
  • Sticking valve in the valve body
  • Contaminated fluid

What to check first

  1. Check fluid condition
  2. Run the solenoid actuation test
  3. Inspect the valve body
Can I drive with P0742? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P0742: questions and answers

What does P0742 mean?

P0742: Torque Converter Clutch Solenoid Circuit Stuck On. The torque converter clutch solenoid appears to stay applied when it should be released.

What are the symptoms of P0742?

Harsh, late or missing shifts. Transmission stuck in one gear (limp mode). Check engine or gearbox warning light.

What causes P0742?

Solenoid stuck mechanically. Sticking valve in the valve body. Contaminated fluid.

How do you diagnose P0742?

1. Check fluid condition 2. Run the solenoid actuation test 3. Inspect the valve body

Can I drive with P0742?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.