Powertrain
generic / SAE
P0743
Torque Converter Clutch Circuit Electrical
An electrical fault in the torque converter clutch solenoid circuit — open, shorted, or out-of-range driver current. The transmission usually inhibits TCC apply when this code is active.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / 43
Possible causes
- TCC solenoid electrically failed high
- Wiring/connector fault medium
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
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2000 €
- Estimated time: 1.5–10 h
- Component: torque converter clutch solenoid
- Component: solenoid wiring
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012