P0741Torque Converter Clutch Circuit Performance/Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0741 means the converter clutch does not lock although commanded – slip stays too high while the circuit is electrically fine. Thresholds: GM's T43 at least 130 rpm for 5 s twice, the 6T70 50 rpm for 5 s three times, Saab's Aisin AF40 over 100 rpm for 2 s, all after two trips; Ford over 100–200 rpm or a speed ratio below 0.93 over five lock-up events; Subaru engine speed more than 9/8 of target for 10.2 s. The module then locks out the clutch, sometimes the top gear, and uses a hot-mode shift pattern. Low or burnt fluid, a worn control valve in the valve body and a glazed converter clutch are the usual causes; Hyundai's 8-speed bulletin calls for a new converter.
- What you may notice
- Check engine light or transmission warning
- Higher engine speed when cruising, 'rubber band' feel
- Higher consumption, rising fluid temperature
- Possibly shudder when the clutch applies
- Likely causes
- LikelyFluid level too low, old or burnt fluid
- LikelyConverter clutch control valve worn or sticking, bore worn
- PossibleLock-up clutch in the converter worn or glazed
- PossibleSolenoid mechanically sluggish (electrically fine)
- RareLeaking turbine shaft seals or pump
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.