P0741 on Toyota

Some 4Runners experience a shudder during light acceleration, typically between 35-50 mph. The issue is often related to the torque converter lockup clutch or transmission fluid condition. Toyota released TSBs addressing fluid type and software updates.

The 2005-2012 Avalon with the U660E 6-speed automatic transmission develops a shudder or vibration during light acceleration, particularly in the 30-50 mph range at low engine RPMs. The shudder feels like driving over a textured road surface and is caused by the torque converter lockup clutch slipping. The issue is more pronounced when the transmission is warm and during gentle throttle application. Some owners describe it as a "rumble strip" feeling. The transmission fluid condition significantly affects the severity of the shudder.

On the Toyota Corolla, P0741 is set when the PCM commands the torque converter clutch (TCC) to lock but detects the converter is slipping — the measured difference between engine RPM and transmission input/output speed exceeds the allowed threshold, so the code reports the TCC is 'stuck off.' The dominant real-world pattern is on the 9th-generation Corolla (2003-2008, 1.8L 1ZZ-FE) with the 4-speed automatic (U340E/U341E family), and it is almost always one of two things on this platform: (1) a failing/sticking TCC lockup solenoid inside the valve body, or (2) transmission fluid that has never been changed and has degraded enough to prevent clean converter lockup. Corolla owners very commonly hit this in the 120,000-160,000 mile range. Multiple forum threads document that the code appears with the classic converter-lockup shudder and that owners who had never serviced the ATF cleared the code with a fluid change. It is important not to jump straight to a converter or full transmission replacement — on the Corolla the cheap solenoid + fluid path resolves the majority of cases.

Toyota recalled certain 2019 Corolla Hatchback models with CVT transmissions due to pump impeller blades within the torque converter potentially detaching under high-load driving conditions. If blades detach, the torque converter loses hydraulic pressure, causing the vehicle to stall and lose power while driving. This is a safety recall (NHTSA Campaign 19V-252).

The A750F 5-speed automatic behind the 4.0L V6 develops a distinct shudder/judder felt as a vibration typically between roughly 35-50 mph under light throttle when the torque converter clutch engages during 'Flex Lockup.' It is caused by aged/degraded Toyota WS fluid losing its friction modifier, producing a stick-slip grab of the lockup clutch; in higher-mileage cases the converter clutch itself has failed. It is frequently confused with an engine misfire because it feels identical.

The intelligent Manual Transmission (iMT) rev-match system can interfere with smooth shifting, causing unexpected RPM blips and a disconnected shift feel. The system sometimes over-revs or under-revs during downshifts, and the clutch pedal feel is reported as vague.

GR86 models with the 6-speed manual develop throw-out bearing noise, typically a chirping or squealing sound when the clutch pedal is depressed or released. The bearing wears prematurely, especially in stop-and-go traffic. Not an immediate failure risk but worsens over time.

The 8-speed automatic transmission in the turbocharged Grand Highlander exhibits harsh 1-2 and 2-3 shifts during light throttle driving, along with torque converter shudder at highway speeds between 40-60 mph. The issue is more pronounced when the transmission is cold.

The Direct Shift 8AT transmission in 4th-gen Highlanders exhibits shudder, hesitation on acceleration, and rough downshifts. The torque converter lockup clutch causes vibration at low speeds, particularly between 25-45 mph.

The ZF 8HP51 automatic transmission exhibits rough or jerky shifts at low speeds, particularly 1st-to-2nd and 2nd-to-3rd gear changes during city driving. The mechatronic unit's valve body can develop wear causing harsh engagement. Cold weather worsens symptoms.

The 6-speed automatic transmission can exhibit rough or hesitant shifting, particularly between 1st and 2nd gear at low speeds. Some owners describe it as lurching or jerking. This is related to the transmission's adaptive learning and torque converter behavior.

The 6-speed manual transmission can exhibit grinding when shifting, particularly into 2nd or 3rd gear, and generally notchy shift feel. This is often related to the synchros or the clutch system hydraulics.

The A132L 3-speed automatic transmission in the Tercel is prone to premature failure, typically presenting as harsh shifting, slipping, or complete loss of forward gears. The transmission was designed for economy driving and struggles with sustained highway use or towing. Internal clutch pack wear and valve body issues are the most common failure modes. Many owners convert to manual transmission or source used replacements rather than rebuild.

Second-generation Tundras with the AB60E/AB60F 6-speed automatic commonly develop a torque-converter clutch (TCC) shudder felt as a vibration or 'rumble strip' sensation during light-to-moderate acceleration, typically between roughly 20-45 mph as the converter clutch tries to lock up. Toyota acknowledged the condition in TSB TC018-07 for 2007-2008 trucks. The root cause is wear in the valve body TCC relay/TCC control valves and a worn torque-converter clutch, often aggravated by using fluid other than Toyota WS or by long fluid-change intervals. Left unaddressed, the slipping clutch contaminates the fluid and can damage the rest of the transmission. Common stored codes are P0741 (TCC stuck off) and P2757 (TCC pressure control).

The U340E/U441E 4-speed automatic in the Yaris develops shudder during torque converter lockup and harsh shifts, particularly 1-2 and 2-3 shifts. Worn transmission fluid and torque converter clutch material are the primary causes.