Drive with caution — fix soon.
This code means the computer has detected an electrical problem in the torque converter clutch circuit, which engages to create a direct link between the engine and transmission. It's often caused by a faulty torque converter clutch solenoid, damaged wiring, or a poor connector. In many cases it's fixable by replacing the solenoid or repairing the circuit without opening the transmission.
$150 – $900
Varies by vehicle and root cause.
Usually yes, for a while, since it mainly affects efficiency and smoothness. But the transmission can run hotter, so get it diagnosed before it leads to bigger problems.
If it's the solenoid or wiring, repairs typically run $150 to $900. If the torque converter itself needs replacement, costs are higher, so a proper diagnosis comes first.
It's usually moderate. It won't strand you immediately, but the added heat and reduced efficiency can lead to more serious transmission wear if ignored for too long.
It locks up at cruising speed to create a direct connection between the engine and transmission, improving fuel economy and reducing slippage and heat.