P1741high severityPowertrain
Torque Converter Clutch Control Error
on 2021 Ford Mustang Mach-E Standard Range Dual Motor AWD · RWD
What this code means
The PCM has detected an error in the torque converter clutch operation. The TCC is not engaging or disengaging as commanded, causing a mismatch between expected and actual TCC behavior.
Symptoms
- Check Engine Light
- Poor fuel economy
- Transmission slipping
- Rough shifting
- Engine may stall at stop (TCC stuck engaged)
- Transmission overheating
Common causes
- Low or dirty transmission fluid
- Faulty TCC solenoid
- TCC solenoid wiring open or shorted
- Worn torque converter clutch
- Valve body stuck TCC apply valve
Diagnostic steps
- Check transmission fluid level and condition
- Test TCC solenoid resistance
- Monitor TCC engagement with scan tool
- Check TCC solenoid wiring for opens/shorts
- Test line pressure
Repair notes
Service transmission fluid. Replace TCC solenoid if faulty. If converter clutch is worn, replace torque converter.
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