OBD-II trouble code
P0741: Torque Converter Clutch Circuit Performance / Stuck Off
The torque converter clutch isn't locking up when the PCM commands it to — usually a worn TCC solenoid, dirty transmission fluid, or internal wear inside the converter itself.
Quick facts
- System
- Powertrain
- Category
- Transmission / Torque Converter
- Severity
- Medium severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $250 – $1,800
- DIY difficulty
- Shop recommended
What does P0741 mean?
P0741 sets when the powertrain control module commands the torque converter clutch to lock and the transmission's RPM signature shows the converter is still slipping. A torque converter normally has a small amount of slip built in for smooth shifting and creep at idle, but at cruise speeds the lockup clutch physically couples the engine and transmission together to eliminate that slip — the same way letting a manual clutch all the way out finishes a shift. When the PCM sees engine RPM staying noticeably higher than transmission input RPM after commanding lockup, it sets P0741.
The most common cause is a worn or sticking TCC solenoid in the valve body. The solenoid is what routes hydraulic pressure to the clutch apply circuit, and these solenoids accumulate fluid varnish over the years until they no longer move freely. The next most common cause is fluid that's old, contaminated, or simply low — TCC apply needs clean fluid at the right pressure to work, and a transmission that's never had a service is the textbook P0741 candidate. Internal wear on the converter clutch lining itself, valve body wear, and wiring or PCM driver faults make up the remaining cases.
Drivers usually notice slightly worse fuel economy on the highway (typically 2-4 MPG lower than they remember), engine RPM that sits 200-400 higher than it used to at the same cruise speed, and sometimes a faint shudder during the lockup window between 35 and 55 mph. The transmission itself usually still shifts cleanly through all gears — the problem is specific to the lockup function, not the gearset.
Common causes
- Worn or sticking torque converter clutch solenoid
- Old, burnt, or contaminated transmission fluid
- Low transmission fluid from a slow leak
- Valve body wear allowing internal pressure leaks
- Worn TCC friction material inside the converter
- Damaged wiring or connector to the TCC solenoid
- Failed PCM driver circuit (rare)
- Aftermarket tune that disables or modifies lockup behavior
- Recent transmission service performed without the correct fluid spec
Symptoms
- Check engine light on with P0741 stored
- Fuel economy dropped 2-4 MPG on the highway
- Engine RPM sits 200-400 higher than usual at cruise speeds
- Subtle shudder or vibration between 35 and 55 mph
- Engine never settles into that 'lower note' on the highway
- Slight loss of throttle response on highway grade pulls
Diagnostic steps
- 1.Read live data on a test drive and watch the TCC commanded vs. actual lockup status, plus the engine-to-transmission RPM difference. P0741 conditions show clearly above 45 mph.
- 2.Check transmission fluid level and condition. Dark, burnt-smelling fluid points to needed service before any solenoid work.
- 3.Pull and inspect the TCC solenoid connector for corrosion or pin damage.
- 4.Resistance-check the TCC solenoid against the manufacturer's spec — most are 10-20 ohms.
- 5.On vehicles with accessible valve bodies, consider a TCC solenoid replacement as the next-cheapest test before condemning the converter.
- 6.If solenoid and fluid are good, the next step is a converter rebuild or replacement, which is a much larger repair.
Repair cost
$250 – $1,800
A transmission fluid service alone runs $150-$300 and resolves a meaningful share of P0741 cases. TCC solenoid replacement is $250-$700 depending on whether the pan needs to come off. A torque converter replacement is the upper end — typically $1,200-$1,800 because the transmission must come out of the vehicle. Aftermarket tune-related P0741 codes can sometimes be cleared by reflashing back to stock for $100-$200.
Estimate your repair
Run the numbers for your vehicle
Open the Repair Cost Estimator with transmission fluid service preselected. Adjust labor rate and vehicle category to fit your situation.
DIY vs shop
Leave this one to a qualified shop. It typically involves emissions-critical components, refrigerant handling, or other work that requires manufacturer-grade tooling, training, or certification. DIY attempts often produce a more expensive problem than the original code.