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P0744
System
Powertrain (Transmission)
Scanner som krävs
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Torque Converter Clutch Circuit Intermittent

Understand P0744, common causes, and the right TOPDON scanner to diagnose it.

Intermittent TCC solenoid circuit.

Vanliga symptom

  • Intermittent shudder at cruise
  • Random trans codes

Typiska orsaker

  • Intermittent solenoid failure
  • Loose trans connector
  • Wire fatigue in internal harness

Vilken scanner behöver du?

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

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade TOPDON-scannrar

Vanliga frågor

What does P0744 mean?
P0744 indicates torque converter clutch circuit intermittent. Intermittent TCC solenoid circuit.
Can I diagnose P0744 with a basic code reader?
P0744 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 P0744?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P0744?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.