What does code P1743 mean on Mazda vehicles?
The torque converter clutch (TCC) is stuck in the engaged position, indicated by the TCIL being on.
OBD-II Code Mazda
P1743 — Mazda — Torque Converter Clutch Failed On (TCIL On)
The torque converter clutch (TCC) is stuck in the engaged position, indicated by the TCIL being on.
Common symptoms
- Engine stalling
- harsh drivability
Possible causes
- TCC solenoid failure
- mechanical lock-up
Initial recommendation
Service transmission and inspect torque converter clutch system.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Mazda code P1743 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands