Torque Converter Clutch Circuit
The torque converter clutch solenoid circuit is malfunctioning.
Informational only. Consult a qualified mechanic.
- Faulty TCC solenoid
- Dirty transmission fluid
- Wiring issue
- Internal transmission problem
Change transmission fluid and filter. If it persists, replace TCC solenoid.
What does P0740 mean?
The P0740 OBD-II diagnostic trouble code (DTC) indicates: torque converter clutch circuit. This is a high-severity powertrain code that your vehicle's onboard diagnostics system triggers when the torque converter clutch solenoid circuit is malfunctioning. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
Use Your Service Book to log this diagnostic trouble code to your vehicle's service history, track repairs, and get maintenance reminders — all for free.
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