P0742: TCC System Stuck On
Possible Causes
- Faulty shift solenoid or pressure control solenoid
- Low or contaminated transmission fluid
- Wiring or connector issues in the transmission circuit
- Mechanical issues in the transmission
- Faulty transmission control module (TCM)
Diagnosis and Repair
- Scan for transmission-related codes using an OBD-II scanner
- Check transmission fluid level and condition; replace if needed
- Inspect wiring and connectors for damage or corrosion
- Test solenoid operation with a multimeter
- Replace faulty solenoids or repair transmission as needed
- Clear codes and test drive to verify repair
Related Error Codes
See also: P0700, P0701, P0702, P0703, P0704
Keywords: relay diagram, vehicle fuse box, automotive wiring, system, stuck, fuse panel layout, fuse replacement guide, car fuse types, tcc, fuse and relay guide, on, car electrical system, p0742:, ECU error codes, fuse box diagram, electrical troubleshooting
Related Posts: