P0744 — Torque Converter Clutch Circuit Electrical
Drive with caution — fix soon.
What P0744 means
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.
Common symptoms
- Check engine light is on
- Slightly reduced fuel economy
- Mild shuddering at cruising speed
- Transmission runs warmer than usual
- Higher engine RPM on the highway
Common causes
- Faulty torque converter clutch solenoid
- Damaged or corroded wiring
- Loose or dirty electrical connector
- Failing transmission control module
- Worn torque converter clutch
Typical repair cost
$150 – $900
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0744 code?
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.
How much does it cost to fix a P0744 code?
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.
Is a P0744 code serious?
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.
What does the torque converter clutch do?
It locks up at cruising speed to create a direct connection between the engine and transmission, improving fuel economy and reducing slippage and heat.