# P0741: Torque Converter Clutch Solenoid Circuit Performance/Stuck Off **Verdict:** Drive to a shop this week Transmission - Generic OBD-II code, applies to all gasoline cars and light trucks sold in the US since 1996. - **Typical cost:** $150-$2,800 - **Urgency:** This week - **Most likely:** Torque converter clutch solenoid or fluid - **DIY?:** Shop job ## Quick answer P0741 means the transmission computer commanded the torque converter clutch to lock up but did not see the expected drop in slip between engine and transmission speed. The torque converter clutch locks the engine to the transmission at cruising speed to save fuel, so when it does not engage, RPM stays higher than normal on the highway. A failing clutch solenoid, fluid problems, or a worn torque converter are the usual causes. ## What does P0741 mean? A torque converter sits between the engine and an automatic transmission and passes power through fluid, which lets the car idle in gear but always allows some slip. Inside it, the torque converter clutch (TCC), also called the lockup clutch, can lock the engine to the transmission at steady cruising speeds. Locking up cuts slip, lowers engine RPM, reduces heat, and saves fuel. The transmission computer applies the clutch through a TCC solenoid that sends fluid pressure to it. After commanding lockup, it compares engine RPM with turbine or input shaft speed. If the difference stays higher than expected for a set time, it sets P0741, meaning the clutch is slipping or not applying. "Stuck off" means it is not locking at all, while related codes such as P0740 and P0742 cover circuit faults and a clutch stuck on. ## What are the symptoms of P0741? - Engine RPM higher than normal at highway speed - Lower fuel economy - Shudder at 35 to 50 mph on some vehicles - Transmission running hotter than usual - Check engine light on ## What causes P0741? Ranked from most to least likely. Check them in this order: the cheap, common causes first. 1. **Failing torque converter clutch solenoid** (most common). The TCC solenoid directs fluid pressure to apply the lockup clutch, and it works constantly during highway driving. Heat, debris, and age can make it stick, leak internally, or respond weakly, so the clutch never fully applies. It is a common failure on high-mileage automatics, and an electrical test or a scan tool command helps confirm it. 2. **Low or worn transmission fluid** (common). The lockup clutch has a thin friction lining that relies on clean fluid with the right friction additives. Low fluid, fluid worn out by heat and age, or the wrong fluid type can let it slip or shudder. Towing and hot climates wear fluid out faster, and dark, burnt-smelling fluid is a clue. 3. **Worn torque converter clutch** (common). Inside the sealed torque converter, the lockup clutch lining wears over time, especially with towing or a long-running shudder. Once worn, it cannot hold even with good pressure, and drivers often feel a shudder like rumble strips at 35 to 50 mph. The converter must then be replaced, which means removing the transmission. 4. **Valve body or wiring problem** (less common). The TCC apply and regulator valves in the valve body can wear their bores, so pressure leaks away before it reaches the clutch, a known issue on some transmission designs. A damaged wire or corroded connector to the solenoid can also block the command. Electrical faults usually set P0740 as well, while valve wear may need pressure testing. ## How do you diagnose P0741? 1. Check fluid level and condition. 2. Read all transmission codes, including any electrical code for the clutch solenoid. 3. Watch torque converter slip on a scan tool at cruise speed when lockup is commanded. 4. Test the solenoid's resistance and operation, then inspect the valve body or converter if needed. ## How do you fix P0741, and what does it cost? | Fix | Typical cost | What it involves | | --- | --- | --- | | Transmission fluid service | $150-$350 | Can help a slipping lockup clutch if the fluid is old. | | Replace torque converter clutch solenoid | $300-$800 | Usually accessed by removing the transmission pan. | | Replace torque converter | $1,200-$2,800 | Requires removing the transmission. | ## Is it safe to drive with P0741? > **Drive to a shop this week.** It is usually safe to drive in the short term, but the transmission runs hotter and wears faster. Avoid towing and long highway trips until it is fixed. ## Will P0741 fail an emissions test? P0741 turns on the check engine light, which fails an OBD-II emissions test in most states. Lockup affects fuel economy and emissions, so it is monitored as an emissions-related fault. Clearing the code resets the readiness monitors, and the code often returns within a few highway drives, so repair it before scheduling the test. ## After the repair: clearing P0741 After the repair, clear the codes and do any adaptive relearn your transmission requires. Then drive at a steady highway speed: on a scan tool, TCC slip should drop close to zero when lockup is commanded, and you should see a small RPM drop as it engages. No shudder and no returning code over several highway drives means it worked. ## How to prevent P0741 - Change transmission fluid on schedule, since worn fluid is a common cause of lockup slip and shudder. - Use the exact fluid type specified, because the lockup clutch depends on the right friction additives. - When towing, use tow/haul mode or a lower gear if your owner's manual advises it. - Ask about an auxiliary transmission cooler if you tow often and your vehicle maker approves one. - Have a shudder at 35 to 50 mph checked early, before the converter clutch wears further. ## P0741 by make | Make | What to know | | --- | --- | | Chevrolet | P0741 is a common complaint on GM trucks and SUVs with 4L60E and related automatic transmissions, often traced to the lockup solenoid or torque converter. | ## Codes often seen with P0741 - [P0700](/codes/p0700): Transmission Control System (MIL Request) - [P0730](/codes/p0730): Incorrect Gear Ratio - [P0715](/codes/p0715): Input/Turbine Speed Sensor "A" Circuit ## Frequently asked questions ### Can I drive with a P0741 code? Yes, for a short time, but expect worse fuel economy and higher transmission temperature, because slipping fluid in the converter creates heat. Avoid towing, heavy loads, and long highway trips until it is repaired. Heat is the main enemy of automatic transmissions, so delaying the repair can lead to wider damage. ### What does a torque converter clutch do? It locks the engine and transmission together at cruising speed, so less power is lost to slipping fluid in the torque converter. That lowers engine RPM, cuts heat, and saves fuel. The computer releases it again when you slow down, stop, or accelerate hard, so the converter can multiply torque. ### Is P0741 expensive to fix? It depends on the cause, from about $150 for a fluid service to $2,800 for a new torque converter. A TCC solenoid replacement in the $300 to $800 range is a common fix, since many solenoids are reached by removing the transmission pan. A proper diagnosis avoids replacing the wrong part. ### What does torque converter shudder feel like? It feels like driving over rumble strips or a rough road, a vibration that comes and goes at steady speeds, often between 35 and 50 mph with light throttle. It usually happens as the lockup clutch tries to apply. Fresh fluid sometimes reduces it, but a worn clutch needs replacement. ### Can a fluid change fix P0741? Sometimes, if worn or contaminated fluid is the cause and the lockup clutch is not badly worn. Some makers have published specific fluid service procedures for converter shudder. If the code returns after a fluid service, the solenoid, valve body, or torque converter itself is the next step. ### Can I fix P0741 myself? Checking fluid level and condition is the realistic DIY step. Replacing the TCC solenoid usually means dropping the transmission pan or valve body, and a new torque converter requires removing the transmission, so most owners use a shop. A scan tool that shows TCC slip helps confirm the diagnosis. ### Why is my engine RPM higher on the highway? Because the torque converter clutch is not locking, so the engine spins faster than the transmission input to push power through the fluid. On many cars this shows as a noticeably higher reading on the tachometer at highway speed than you are used to. Fuel economy drops and the transmission runs hotter. ### Will P0741 fail an emissions test? Yes, in most states that test OBD-II cars, a lit check engine light with P0741 stored is a fail. The code often comes back within a few highway drives after being cleared, and clearing resets the readiness monitors anyway. Repair the cause, then drive normally until the monitors complete. ### Can P0741 damage my transmission? It can over time. A slipping lockup clutch creates heat and spreads friction material through the fluid, which can wear other clutches and clog the filter and valve body. Fixing it early, ideally while it is still a fluid or solenoid problem, avoids the cost of a full rebuild later. ### Is P0741 common on GM trucks? Yes, P0741 is a well-known complaint on GM trucks and SUVs with the 4L60E and related automatic transmissions, often traced to the TCC solenoid, worn valve body bores, or the torque converter. Other makers' transmissions set it too, so proper diagnosis still matters before replacing parts. ## Sources - [SAE J2012: Diagnostic Trouble Code Definitions](https://www.sae.org/standards/content/j2012_201812/) ## Other transmission codes - [P0700 Transmission Control System (MIL Request)](https://diagxcar.com/codes/p0700) - [P0705 Transmission Range Sensor "A" Circuit (PRNDL Input)](https://diagxcar.com/codes/p0705) - [P0715 Input/Turbine Speed Sensor "A" Circuit](https://diagxcar.com/codes/p0715) - [P0717 Input/Turbine Speed Sensor "A" Circuit No Signal](https://diagxcar.com/codes/p0717) - [P0720 Output Shaft Speed Sensor "A" Circuit](https://diagxcar.com/codes/p0720) - [P0730 Incorrect Gear Ratio](https://diagxcar.com/codes/p0730) - [P0731 Gear 1 Incorrect Ratio](https://diagxcar.com/codes/p0731) - [P0732 Gear 2 Incorrect Ratio](https://diagxcar.com/codes/p0732) - [P0740 Torque Converter Clutch Solenoid Circuit/Open](https://diagxcar.com/codes/p0740) - [P0750 Shift Solenoid "A"](https://diagxcar.com/codes/p0750) ## Symptoms - [Why does my car jerk when I accelerate?](https://diagxcar.com/symptoms/car-jerks-when-accelerating) - [Why does my car stall while driving?](https://diagxcar.com/symptoms/car-stalls-while-driving) - [Why is my transmission slipping?](https://diagxcar.com/symptoms/transmission-slipping) - [Why does my car whine when I accelerate?](https://diagxcar.com/symptoms/whining-noise-when-accelerating) ## Repair costs - [Transmission replacement cost](https://diagxcar.com/cost/transmission-replacement) --- Source page: https://diagxcar.com/codes/p0741 Updated: 2026-11-03 General information, not a substitute for a qualified mechanic.