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Diagnose/P0742
P0742High SeverityTransmission

Torque Converter Clutch Circuit Stuck On

What This Means

The torque converter clutch is remaining engaged when it should release. This can cause the engine to stall when coming to a stop as the torque converter cannot slip.

Common Symptoms

  • Engine stalls at stops
  • Harsh engagement from stop
  • Vehicle lurches
  • Check engine light on

Common Causes

  • TCC solenoid stuck on
  • Valve body issue
  • Internal converter mechanical lock
  • Wiring short
  • Contaminated fluid

Estimated Repair Cost

$200 – $2000
Parts and labor (varies by vehicle and location)
Difficulty:Professional

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.