P0742
Sistema
Powertrain (Transmission)
Scanner richiesto
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Torque Converter Clutch Circuit Stuck On

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

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

Sintomi comuni

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

Cause tipiche

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

Quale scanner ti serve?

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

Usa dati live e freeze frame prima di sostituire componenti. I codici ABS, SRS e U richiedono spesso uno scanner mult sistema.

Consigli diagnostici

  • Registra il freeze frame quando il codice compare la prima volta
  • Cancella il codice solo dopo aver risolto la causa
  • Controlla i codici pending correlati
  • Verifica che la batteria sia sopra 12,4 V prima di sospettare un sensore

Scanner FOXWELL consigliati

Domande frequenti

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.
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.