P0741 on Audi: How to Diagnose & Fix
Torque Converter Clutch Circuit Performance/Stuck Off
3 Audi models · 3 documented issues · 3 critical · $900-$6,000 repair
P0741 on Audi by model: symptoms, diagnosis and fix
On the 2013 S8, the 4.0 TFSI V8 (engine code CGTA) is paired with Audi's 8-speed automatic (gearbox code 0BK). Audi issued two software fixes for this gearbox in the 2013 model year. Update 37H1 (October 2012) covers 2013 A8 and S8 4.0 TFSI cars in VIN range 004908-013096 where shifting "may feel uncomfortable". Audi's fix was new engine and transmission control software. TSB 2028985/10 covers a transmission warning light that goes away after the next ignition cycle and leaves code P074100 (Torque Converter Clutch Circuit Performance, or "Stuck Off") stored in the transmission control module. Audi says the fault happens when the ATF is below 60°C, and the bulletin applies only if the ATF level is correct and nothing is leaking. That fix is also software plus an adaptation, with no new parts. So on a 2013 car, a converter-clutch code can be a software issue and does not by itself mean the converter has failed. Real shudder can happen in any automatic with a torque converter, caused by a worn converter clutch or by ATF that is old or the wrong type. It feels like driving over rumble strips, usually at steady speeds around 25-50 mph. The Audi bulletins cited here cover only the 2013 model year. For later S8s, treat shudder as a general wear item, not a documented Audi pattern. Audi's 2013 US maintenance schedule only asks for automatic-transmission leak checks. It lists no routine ATF change for this gearbox.
Common Symptoms
- Shifts feel rough or uncomfortable (2013 4.0 TFSI cars; software Update 37H1)
- Transmission warning light that goes away after restarting, with P074100 stored (TSB 2028985)
- Shudder like driving over rumble strips at steady 25-50 mph (torque converter clutch)
- Jerky feel under acceleration
- Transmission fault codes stored in the TCM
How to Fix
1) Read the transmission fault memory first. If a 2013 S8 has P074100 stored and a warning light that clears after a restart, ask an Audi dealer about TSB 2028985/10. The fix is a TCM software update, then clearing adaptations and doing a standstill adaptation. It only applies if the ATF level is correct and there are no leaks. Outside any warranty, Audi treats this bulletin as informational only, so the owner pays. 2) If shifts feel rough on a 2013 S8 4.0 TFSI in VIN range 004908-013096, ask the dealer whether Update 37H1 (ECM and TCM software) is open for your VIN in ElsaWeb. Audi paid for 37H1 only when it showed as open for the VIN and the car was within the Federal Emissions Warranty. Otherwise the owner can choose to pay for it. 3) Check the ATF level and condition and look for leaks. For shudder, the first and cheapest step is a fluid change with the specified ATF, plus the filter where it can be serviced. 4) Only if shudder continues after the software, adaptation and fluid steps should a shop confirm converter-clutch slip and quote a new converter. That job means removing the transmission, so labor costs are high. Get a written diagnosis before you agree to replace the converter or valve body.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (4)
- Audi 2013 Scheduled Maintenance Intervalsmanual
- Audi Update 37H1: 2013 A8/S8 4.0L TFSI 8-speed - shifting may feel uncomfortable (ECM/TCM software)tsb
- Audi TSB 2028985/10: Transmission warning message in cluster (P074100 stored in TCM)tsb
- Jalopnik: What Is Torque Converter Shudder And How To Fix Itarticle
Multiple D3-generation A8 owners report shuddering, slipping, delayed engagement, and harsh shifting traced to the ZF 6HP26 automatic transmission, especially the torque converter lock-up clutch. The problem often begins as a light vibration at steady cruise or a flare on 3-4/4-5 shifts, then progresses to fault codes and limp mode. Audi/ZF service literature and independent repair databases document valve body wear and torque converter clutch deterioration as recurring causes.
Common Symptoms
- Shudder at light throttle around 35-55 mph
- Delayed drive or reverse engagement
- Harsh or flaring shifts
- Transmission warning message
- Limp mode
- Vibration during torque converter lockup
How to Fix
Diagnosis typically includes scanning the transmission control module for ratio and converter clutch faults, checking fluid condition, and measuring slip values during road testing. Repairs range from fluid/filter service and valve body work to torque converter replacement or full transmission rebuild if clutch debris has contaminated the unit. Using the correct ZF Lifeguard fluid and adapting the transmission after repair is commonly recommended.
Sources for this issue (2)
The 2002-2003 S6 (C5, 4.2 V8) uses the ZF 5HP24A five-speed Tiptronic automatic, the all-wheel-drive (quattro) version of the 5HP24. As these transmissions wear, clearance grows between the pressure regulator valve and its bore in the valve body, and line pressure becomes erratic. Pressure spikes cause harsh or banging shifts and a bang on kick-down, and they can break clutch drum "A". A broken drum A shows up as hesitation at takeoff or a failure to engage a forward gear. If pressure leaks away instead, shifts go soft and the clutches can burn. Bore wear can also set slip codes, and the transmission can drop into limp mode. An enthusiast review of these cars calls the transmission a known weak spot.
Common Symptoms
- Harsh or banging shifts
- Bang on kick-down
- Hesitation at takeoff or no forward gear
- Transmission limp mode
- Gear hunting on hills
How to Fix
What to check first: 1) Scan the transmission control module for stored faults. Slip codes and forward slip are among the signs of pressure regulator valve bore wear. 2) Check the ATF level and condition. The 5HP24 is specified for ZF Lifeguard fluid (Lifeguard A / Lifeguard 5), so do not top up with generic ATF. Burnt fluid can mean the clutches have already been damaged by low line pressure, so the problem is more than a valve body fault. 3) Note when the problem happens. Harsh or banging shifts and a bang on kick-down point to the pressure regulator valve. Hesitation at takeoff, or no forward gear at all, can mean clutch drum "A" is already broken. Repair path: if the clutches and drum are healthy, a transmission shop can recondition the valve body. The worn pressure regulator valve bore is the usual target, and aftermarket repair kits are made for it (Sonnax 1767 oversized pressure regulator valve kit for the ZF5HP24/24A, TransGo 5HP-24-PR). If drum "A" is broken, the drum, the pressure regulator valve and the lower valve body all have to be replaced. Ask the shop whether the quote covers only the valve body or also includes the drum. We found no Audi recall or warranty extension that covers this transmission on these cars.
Sources for this issue (7)
- Audi ElsaWeb Model Listing - 4B6 S6 Avant 2002-2003manual
- 2003 Audi S6 Avant - 'transmissions are a known weak spot on these'forum
- 2002 Audi S6 Avant - 'the weak Tiptronic transmission'forum
- ZF 5HP transmission - Wikipediareference
- Sonnax 1767 oversized pressure regulator valve kit (ZF5HP24/24A)parts
- TransGo 5HP-24-PR ZF5HP-24 pressure regulator repair kitparts
- ZF 5HP24 Transmission Problems & Specsarticle
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 Audi?
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 Audi it is documented across 3 models: S8, A8, S6.
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 Audi?
Published repair estimates on Audi range from $900 to $6,000 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.