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P0742
System
Powertrain (Transmission)
Wymagany skaner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Torque Converter Clutch Circuit Stuck On

Understand P0742, common causes, and the right TOPDON scanner to diagnose it.

TCC stuck engaged — engine may stall at stops or shudder.

Typowe objawy

  • Stalling when stopping
  • Shudder at low speed
  • Rough idle in gear

Typowe przyczyny

  • Stuck TCC solenoid
  • Valve body fault
  • Internal converter clutch welded

Jakiego skanera potrzebujesz?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Użyj danych na żywo i freeze frame przed wymianą części. Kody ABS, SRS i U zwykle wymagają skanera full-system.

Wskazówki diagnostyczne

  • Zapisz freeze frame, gdy pojawi się kod
  • Kasuj kod dopiero po usunięciu przyczyny
  • Sprawdź powiązane kody pending
  • Sprawdź, czy napięcie akumulatora jest powyżej 12,4 V przed podejrzeniem czujników

Polecane skanery TOPDON

Często zadawane pytania

What does P0742 mean?
P0742 indicates torque converter clutch circuit stuck on. TCC stuck engaged — engine may stall at stops or shudder.
Can I diagnose P0742 with a basic code reader?
P0742 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for P0742?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P0742?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.