OBD-II code · Powertrain (generic)
P0744 Torque Converter Clutch Circuit Intermittent
The TCC circuit drops in and out — intermittent open or short. Symptoms include erratic shudder at lock-up speeds and intermittent engine stalls when stopping.
Is it safe to drive with P0744?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyIntermittent wiring fault
- PossibleTCC solenoid failing
- Less likelyConnector with intermittent contact under vibration
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Tcc Solenoid, Solenoid Wiring
Related codes
- P0740Torque Converter Clutch Circuit Malfunction
- P0741Torque Converter Clutch Circuit Performance/Stuck Off
- P0742Torque Converter Clutch Circuit Stuck On
- P0743Torque Converter Clutch Circuit Electrical
- P0745Pressure Control Solenoid A
- P0746Pressure Control Solenoid A Performance
- P0747Pressure Control Solenoid A Stuck On
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.