P0741 on Lexus: How to Diagnose & Fix
Torque Converter Clutch Circuit Performance/Stuck Off
1 Lexus model · 1 documented issue · $200-$3,000 repair
P0741 on Lexus by model: symptoms, diagnosis and fix
The Aisin 8-speed automatic in the fourth-generation RX develops a noticeable shudder or vibration during light throttle acceleration, particularly in the 25-45 MPH range during torque converter lockup. Lexus bulletin L-SB-0032-19 attributes the surge (felt between 0-46 mph in 3rd-8th gear with the torque converter fully locked) and the bucking after 1-2/2-3 upshifts on 2016-2019 RX350 and RX350L to engine control logic, which Lexus revised. The bulletin does not cover 2020-2022 models.
Common Symptoms
- Vibration or shudder at 25-45 MPH
- Shudder during light acceleration
- Feeling like driving over rumble strips
- Vibration disappears under heavy throttle or braking
How to Fix
On 2016-2019 models, have the dealer apply the ECM (PCM) reflash in Lexus bulletin L-SB-0032-19, which is covered under the Lexus Federal Emissions Warranty (96 months/80,000 miles) when the condition is present. Severe cases may require a torque converter replacement. Do not flush — only drain and refill. Plan to change the fluid every 30,000-40,000 miles despite the "lifetime" fluid claim.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Owner tips & cautions
- TipA simple drain-and-fill of Toyota WS ATF fixes the shudder in 90% of cases. Do 2-3 drain-and-fill cycles over 10,000 miles to fully flush the old contaminated fluid.
Sources for this issue (1)
P0741 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0741 mean on a Lexus?
P0741 stands for "Torque Converter Clutch Circuit Performance/Stuck Off." This code means the torque converter clutch (TCC) is not working as expected and is effectively stuck off, so the converter clutch isn't locking up the way the computer commands it to. The TCC mechanically links the engine to the transmission at cruising speeds to reduce slippage and improve fuel economy, and the computer compares engine RPM to transmission/output speed to verify lockup. When the expected RPM drop from lockup doesn't happen, it sets this performance code. You may notice higher-than-normal RPM at highway speed, reduced fuel economy, and sometimes elevated transmission temperatures. On Lexus it is documented across 1 model: RX.
What are the most common causes of P0741?
The most common causes of P0741 are: Low, dirty, or degraded transmission fluid, Faulty torque converter clutch (TCC) solenoid, Stuck or worn valve body / TCC control valve, Failed torque converter (internal clutch worn or slipping), Internal transmission leaks reducing apply pressure, Damaged wiring or connector to the TCC solenoid, Faulty transmission control module (TCM/PCM). The specific cause varies by vehicle.
How much does it cost to fix P0741 on a Lexus?
Published repair estimates on Lexus range from $200 to $3,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.