P17BF: Transmission Clutch B Performance
17 vehicles · 5 makes · $200-$5,500 repair
Most Reported On
P17BF is an OBD-II diagnostic trouble code meaning “Transmission Clutch B Performance.” This is a manufacturer-specific transmission code (seen on BMW, VW/Audi, and similar dual-clutch or automatic units) indicating a performance problem with transmission clutch 'B.' The transmission control module monitors clutch engagement by comparing input and output speeds to confirm each clutch grips and releases within expected parameters; when clutch B does not behave as commanded, this code is set. It commonly accompanies symptoms like shudder, slipping, harsh or delayed shifts, or a jerky feeling during gear changes. It generally indicates the clutch is slipping, wearing, or not being applied with the correct pressure rather than a simple sensor fault. This code is most commonly reported on 2008-2020 Volkswagen Touran, 2009-2017 Volkswagen Tiguan, and 2008-2020 SEAT Ibiza (Style, FR, Xcellence), plus 14 other vehicles, with repair costs ranging from $200 to $5,500.
Common Causes
Typical Repair Cost
Based on 19 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P17BF, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (17)
DSG DQ200 (7-Speed Dry Clutch) Mechatronic Failure
DQ200 7-Speed Dry-Clutch DSG Mechatronic and Clutch Failure
7-speed dry-clutch DSG (DQ200) jerky shifts and mechatronic failure
7-Speed DSG (DQ200) Dry-Clutch Mechatronic Failure
DSG Dual-Clutch Transmission Jerking and Mechatronic Failure
7-Speed DSG (DQ200) Dry-Clutch / Mechatronic Failures
7-Speed DSG (DQ200) Mechatronic and Jerky Shifting Faults
DQ200 7-speed dry-clutch DSG mechatronic and clutch-pack failure
7-speed dry-clutch DSG (DQ200) mechatronic and clutch-pack failures
DQ200 7-Speed Dry-Clutch DSG Failure (Mechatronic and Clutch Pack)
DSG Mechatronic Unit Failure
DSG Mechatronic Unit Failure
DSG (DQ250 6-Speed) Mechatronic Unit and Clutch Pack Failure
DQ200 7-speed DSG mechatronic unit failure (subject to recall)
DQ200 7-Speed Dry-Clutch DSG Mechatronic and Clutch Failure
7-speed DSG (DQ200) dry-clutch mechatronic failure and juddering
7-speed DQ200 dry-clutch DSG: jerky shifts, shudder and hesitation
FAQ
What does P17BF mean?
P17BF stands for "Transmission Clutch B Performance." This is a manufacturer-specific transmission code (seen on BMW, VW/Audi, and similar dual-clutch or automatic units) indicating a performance problem with transmission clutch 'B.' The transmission control module monitors clutch engagement by comparing input and output speeds to confirm each clutch grips and releases within expected parameters; when clutch B does not behave as commanded, this code is set. It commonly accompanies symptoms like shudder, slipping, harsh or delayed shifts, or a jerky feeling during gear changes. It generally indicates the clutch is slipping, wearing, or not being applied with the correct pressure rather than a simple sensor fault.
What are the most common causes of P17BF?
The most common causes of P17BF are: Worn or slipping clutch B friction material, Low, old, or degraded transmission fluid, Incorrect clutch fill pressure from the valve body or solenoid, Mechatronic/valve body fault, Clutch adaptation values out of range (needs relearn), Internal mechanical wear or damage in the transmission, Faulty transmission control module or wiring. The specific cause varies by vehicle.
How much does it cost to fix P17BF?
Repair costs for P17BF range from $200 to $5,500, depending on the vehicle and root cause.
Which vehicles are affected by P17BF?
Au7o has documented P17BF across 17 vehicle models from 5 manufacturers: Kia, Mercedes-Benz, SEAT, Skoda, Volkswagen.
Sources (12)
- articleDSG 7 / DQ200 Mechatronic Repair – ECU Testing
- article7 Speed DSG Gearbox Problems | Mechatronic Faults | DSG Clutch Pack – Eco Torque
- articleHas Volkswagen sorted all of the DSG issues? – Honest John
- ForumReddit r/Volkswagen discussion on DSG Mechatronic Unit Failure on Tiguan
- ForumReddit r/Volkswagen discussion on DSG Mechatronic Unit Failure on GTI
- Forum2010 Eos transmission/mechatronic issues — Volkswagen Eos Forum
- Forum2008 VW EOS DSG Transmission Issues — Volkswagen Forum
- RecallVolkswagen Eos Recalls (incl. DSG temp sensor 09V333000) — Cars.com
- ForumDSG Gearbox Fault | Skoda Kodiaq SUV Forum
- ForumDSG issue | Skoda Kodiaq SUV Forum
- articleSkoda Kodiaq, Octavia, Superb Common Gearbox Problems | ASR Gearbox Repairs
- articleSEAT Ibiza (2008-2017) Review | Honest John
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.