OBD-II diagnostic trouble code
P0741Caution
Torque Converter Clutch Circuit Performance or Stuck Off
The torque converter clutch locks the engine directly to the transmission at cruising speed for better efficiency (instead of running through the fluid coupling). This code means that lock-up clutch isn't engaging when it should — the transmission is stuck relying on the less efficient fluid coupling all the time.
Symptoms
- Slightly higher engine RPM than normal at steady highway speed
- Worse fuel economy on the motorway specifically
- A subtle "slipping" feeling under light steady-throttle cruising
- Transmission may run slightly hotter than normal over long drives
Likely causes
- Low or degraded transmission fluid — often the simplest and most common cause
- A failing torque converter clutch solenoid
- Internal wear in the torque converter itself
- A wiring or connector fault to the solenoid
How to diagnose it
- Check transmission fluid level and condition first — this alone resolves many cases
- Test the torque converter clutch solenoid's resistance and operation with a scan tool
- If fluid and solenoid both check out, internal torque converter wear becomes the more likely (and more expensive) cause
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Code names are compiled from open/standardized SAE and ISO references. Explanations, symptoms, causes and fixes are original. Covers generic (P0/C0/B0/U0) codes only — manufacturer-specific codes are planned for a future update.
Frequently asked questions
Can I drive with P0741?
You can usually keep driving with P0741, but don't put it off — the underlying cause can get worse or lead to further damage the longer it goes unaddressed. Get it diagnosed as soon as you reasonably can.
How much does it cost to fix P0741?
Typical repair costs for {code} range from roughly 100 to 1800 EUR, depending on the specific cause and your car — see the fixes listed above for a breakdown.
What causes P0741?
Low or degraded transmission fluid — often the simplest and most common cause A failing torque converter clutch solenoid Internal wear in the torque converter itself
Reviewed by Artyom SemenovAutomotive Editor · Fact-checked by Yauheni Kapliarchuk, Editor-in-Chief