P0743: TCC Enable Solenoid Circuit Electrical
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, electrical, automotive wiring, solenoid, fuse panel layout, fuse replacement guide, car fuse types, tcc, fuse and relay guide, circuit, car electrical system, enable, ECU error codes, fuse box diagram, p0743:, electrical troubleshooting
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