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TransmissionGeneric OBD-II codeUrgency: Garage soon

Code P0741: torque converter clutch not locking up

P0741 means: torque converter clutch (TCC) circuit: performance or stuck off.[1][2] In an automatic gearbox with a torque converter, the ECU commands the torque converter clutch (TCC) to lock under certain conditions, mechanically joining the engine and gearbox. P0741 is logged when that lock-up does not happen as commanded: the converter keeps slipping at cruising speed.[1][3]

System
Transmission
Urgency
Garage soon
You can drive carefully, but book a garage appointment as soon as possible
Possible causes
6
sorted from most to least likely
Type
Generic
The same on all makes

4 sourcesHow we work

What code P0741 means

In an automatic gearbox with a torque converter, the ECU commands the torque converter clutch (TCC) to lock under certain conditions, mechanically joining the engine and gearbox. P0741 is logged when that lock-up does not happen as commanded: the converter keeps slipping at cruising speed.[1][3]

It is a generic OBD-II code (it starts with P0), so the definition is the same on all brands; on some it is generated by the gearbox control unit and on others by the engine control unit.[2]

Original definition (SAE J2012): Torque Converter Clutch Circuit Performance or Stuck Off[1][2]

Causes of P0741

From most to least likely, according to the sources.

  1. 1Faulty torque converter clutch (TCC) solenoid, inside the hydraulic block: the most frequently cited cause.[1][2]
  2. 2Gearbox oil (ATF) that is degraded, contaminated or at the wrong level, which alters the pressure and makes solenoids or valves stick.[1][3]
  3. 3Solenoid circuit wiring or connectors with a short circuit, corrosion or poor contact.[2][3]
  4. 4Valve body that is dirty or worn, or with internal leaks.[1][3]
  5. 5Worn torque converter, especially at high mileage and with poor oil maintenance.[1][3]
  6. 6According to one of the sources, also a faulty coolant temperature sensor.[2]

Symptoms

How to diagnose P0741

In order: from the most likely and cheapest to check to the most expensive.

  1. 1Check the level and condition of the gearbox oil (ATF). Old, low or burnt oil explains many cases and is the cheapest thing to correct; if the manufacturer calls for it, change it together with the filter.[1][3]
  2. 2On a road test, use the diagnostic tool to read the TCC lock-up command and the converter slip at a steady speed.[1][3]
  3. 3Check the gearbox wiring and connectors and measure the supply, earth and resistance of the TCC solenoid before thinking of a mechanical fault.[2][3]
  4. 4If the electrical circuit is fine and the slip persists, consider the valve body and, last of all, the torque converter.[1][3]

Can I keep driving with P0741?

Garage soon

You can drive gently for a while, but the constant slipping heats the oil and can damage the gearbox clutches in the long run; it should be checked soon. Carista rates the severity as medium.[1]

Documented faults related to P0741

Known faults of specific engines and cars, with their repair cost, the affected years and their sources.

Automatic gearbox (torque converter and CVT): the most serious faults by engine and car

All faults with the automatic gearbox (85)

Frequently asked questions

What does code P0741 mean?

That the ECU has detected that the torque converter clutch does not lock when commanded (or does not respond as it should). It is a generic code and means the same on all brands.[1][2]

Can I keep driving with P0741?

For a while and gently, yes, but sustained slipping overheats the oil and can end up damaging the gearbox. It is best to check it soon.[1]

Does the torque converter need replacing?

Not necessarily. The most commonly cited cause is the TCC solenoid, and degraded oil explains many cases; the converter is the last thing to be replaced, after ruling out oil, wiring, solenoid and valve body.[1][3]

Will I pass the MOT with code P0741?

If the code has switched on the engine warning light, no: with that light on, the inspection records a serious defect, and on Euro 5 and Euro 6 cars the ITV (Spain's roadworthiness inspection, similar to the MOT) also reads the OBD diagnostic system. Repair the fault before you go; clearing the code just before the inspection does not help either, because it counts as a serious defect.[4]

Not sure what is wrong with your car? Describe what you notice in the symptom diagnosis or see all fault codes.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. P0741: Torque Converter Clutch Circuit Performance or Stuck OffCarista · Technical documentation · consulted 29 October 2026
  2. Código P0741: comportamiento del circuito de embrague del convertidor de par o atascadoCódigosDTC · Technical documentation · consulted 29 October 2026 · in Spanish
  3. Code défaut P0741Carverif · Technical documentation · consulted 29 October 2026 · in French
  4. Desmontando mitos: ¿puede pasar mi coche la ITV con el testigo de «avería motor» encendido?Diariomotor · Motoring press · published 8 March 2021 · consulted 2 October 2026 · in Spanish