Code result
P0740
Torque Converter Clutch Circuit Malfunction
High severity
What it means
A general fault has been detected in the torque converter clutch (TCC) lockup circuit. The TCC mechanically links the engine to the transmission input shaft above a certain speed to eliminate slip and improve fuel economy.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
TCC solenoid failed
highOne of the most commonly reported causes for this code — check this first.
Transmission fluid low or burnt
mediumA plausible cause — test and verify before replacing parts.
Wiring fault to solenoid
lowLess common, but worth ruling out after the more likely causes.
Related help
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