P0744 Code: Torque Converter Clutch Circuit Intermittent
🟠 Moderate severity · drivable
You can drive, but the torque converter clutch may lock and unlock at random, causing shudders and RPM changes.
What P0744 means
The torque converter clutch circuit signal is cutting in and out. The clutch may lock and unlock unexpectedly while you drive, causing shudders and sudden RPM changes. Loose connections, a failing solenoid, or contaminated fluid are the usual causes.
Symptoms
- Check engine light is on
- Shudder when cruising at highway speed
- Sudden RPM changes while driving
- Occasional stalling when stopping
Common causes
- most common: Loose or corroded connector
- common: Faulty torque converter clutch solenoid
- common: Damaged or chafed wiring
- less common: Low or contaminated transmission fluid
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Check transmission fluid level and condition | Yes | $20–60 |
| Clean and re-seat the solenoid connector | Yes | $10–30 |
| Replace the torque converter clutch solenoid | Mechanic | $150–450 |
Frequently asked questions
Can I drive with a P0744 code?
Yes, but the clutch can lock and unlock at random, causing shudders and RPM swings. Have it diagnosed soon.
Why is the P0744 code intermittent?
Intermittent codes usually come from loose or corroded connections, a failing solenoid, or contaminated fluid. The fault appears and disappears as conditions change.
How much does it cost to fix a P0744?
Cleaning a connector or topping up fluid is cheap. If the TCC solenoid needs replacing, expect $150–$450.
Related codes
P0740
P0740 Code: Torque Converter Clutch Circuit Malfunction
P0741P0741 Code: Torque Converter Clutch Circuit Performance or Stuck Off
P0742P0742 Code: Torque Converter Clutch Circuit Stuck On
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.