Transmission code
P0741: Torque converter clutch not locking
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $60 | $400 |
| Labor: 2 to 5 hours × $125 to $175 an hour | $250 | $875 |
| Fees: shop supplies, disposal, diagnostics | $15 | $40 |
| Total, rounded | $320 | $1,325 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in Boston, $31.54 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
This is the range for the most common fix, transmission solenoid replacement. Which repair your car needs depends on a proper diagnosis.
At steady highway speeds the torque converter normally locks so the engine and transmission turn together, which saves fuel and runs cooler. The computer sees engine speed and transmission speed drifting apart, meaning the lock-up clutch is not holding. That slip adds heat to the fluid.
- Safe to drive?
- Short trips only
- Most common cause
- Worn torque converter clutch
Short trips are okay, but long highway drives can overheat the fluid, so get it checked soon.
What you may notice
- Engine speed higher than normal at cruising
- Shudder at steady speeds
- Worse mileage
- Transmission running hot
Common causes, most likely first
- Worn torque converter clutch
- Failed lock-up solenoid
- Dirty or low fluid
- Low pressure in the valve body
- Electrical fault
Check this first
Check the transmission fluid level and color if your car has a dipstick. Dark, burnt-smelling or low fluid is a warning sign. Ask when the fluid was last changed, since old fluid shortens the life of the lock-up parts.
Other repairs that sometimes fix P0741
| Repair | Typical range, Boston |
|---|---|
| Torque converter replacement | $970 to $2,725 |
| Transmission fluid service | $150 to $520 |
| Transmission rebuild or replacement | $3,100 to $6,800 |
Before you pay
- Ask the shop what test showed this part is the cause, not just that the code appeared.
- Ask for parts and labor listed separately, and for the hours.
- Ask for a written OK before any extra work. Massachusetts rules require written authorization before repairs.
Got a quote already? Check it against the range. Want to see if your car has a recall tied to this problem? Check recalls by VIN.
Need to read a code yourself? OBD-II scanners on eBay (affiliate link, disclosure).
P0741 questions
What does the torque converter do?
It links the engine to the transmission through fluid, which lets the car sit still in gear. At cruising speed a clutch inside locks the two together, so less power is wasted and fuel economy improves.
Is it an easy fix?
Sometimes the lock-up solenoid is the issue, which is a smaller job. Other times the converter itself has worn out, which means removing the transmission and costs far more. Testing tells the two apart.
Will new fluid help?
If the old fluid is the cause, a fluid service can help, but it will not fix worn parts. Do not flush a transmission that already slips badly, so ask the shop what they see before you choose.
How much does it cost to fix P0741?
The most common fix, transmission solenoid replacement, has a typical range of $320 to $1,325 in Boston. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
Related codes
- P0700: Transmission computer reports a fault
- P0500: Vehicle speed sensor signal problem
- P0562: System voltage low
- P0521: Oil pressure sensor signal out of range
More transmission codes
Code meaning written in our own words. Some codes mean different things on different makes, so check your scan tool or manual. Not a repair shop, estimates only.