P17BF: Transmission Clutch B Performance
8 vehicles · 3 makes · $600-$8,000 repair
P17BF is an OBD-II diagnostic trouble code meaning “Transmission Clutch B Performance.” Clutch B in the transmission is not performing correctly. Specific gear range will be affected. This code appears across 8 vehicle models from 3 manufacturers, with repair costs ranging from $600 to $8,000.
Common Causes
Typical Repair Cost
Based on 8 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
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (8)
S-Tronic Mechatronic Unit and Clutch Pack Failure
S-Tronic/DSG Mechatronic Unit Failure
S tronic Dual-Clutch Mechatronic Unit Failure
DQ381/DQ250 S tronic Mechatronic or Internal Transmission Fault Causing No-Drive, Jerking, or Gearbox Warning
FAQ
What does P17BF mean?
P17BF stands for "Transmission Clutch B Performance." Clutch B in the transmission is not performing correctly. Specific gear range will be affected.
What are the most common causes of P17BF?
The most common causes of P17BF are: Worn clutch plates, Seal leak, Solenoid fault, Low fluid pressure, Contaminated fluid. The specific cause varies by vehicle.
How much does it cost to fix P17BF?
Repair costs for P17BF range from $600 to $8,000, depending on the vehicle and root cause.
Which vehicles are affected by P17BF?
Au7o has documented P17BF across 8 vehicle models from 3 manufacturers: Audi, BMW, Volkswagen.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.