The torque converter clutch solenoid circuit is malfunctioning.
Informational only. Consult a qualified mechanic.
Change transmission fluid and filter. If it persists, replace TCC solenoid.
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.
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