P0744 — Torque Converter Clutch Circuit Intermittent
Category: Powertrain Severity: Medium
Updated:
DTC code P0744 means: Torque Converter Clutch Circuit Intermittent. It falls under the "Powertrain" category, with an estimated severity of Medium. Common causes include intermittently failing TCC solenoid, poor contact at the transmission connector and damaged internal harness; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Intermittently failing TCC solenoid
- Poor contact at the transmission connector
- Damaged internal harness
- Degraded ATF
Symptoms
- Shudder at steady speed
- Slightly higher fuel use
- Converter doesn't always lock
How to diagnose it step by step
- Check the transmission connector.
- Change the ATF if needed.
- Measure the TCC solenoid.
- Replace the solenoid or harness.
How to fix it
Check the transmission connector (oil often gets in) and internal harness; change the ATF if old and, if it persists, the TCC solenoid.
Estimated repair cost
Solenoid: $60–250 + labor ($200–400).
Frequently asked questions
What does DTC code P0744 mean?
Torque Converter Clutch Circuit Intermittent.
Is code P0744 serious?
Severity Medium. Not urgent, but worth diagnosing to avoid bigger damage.
Can I keep driving with code P0744?
Yes, carefully.
Related codes
P0743 P0741 P0740 P0750 P0735 P0753 P0734 P0733 P0755 P0732
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