OBD-II code · Network
U017F Lost Communication With Seat Belt Pretensioner Module B
ECU lost communication with seat belt pretensioner module B. Pretensioner function may be unavailable in a crash.
Is it safe to drive with U017F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Seatbelt Pretensioner B, Can Bus
Related codes
- U017ELost Communication With Seat Belt Pretensioner Module A
- U017CLost Communication With Restraints System Sensor M
- U017DLost Communication With Restraints System Sensor N
- U0180Lost Communication with Automatic Lighting Control Module
- U0181Lost Communication with Auto Park Brake Module
- U0182Lost Communication with Headlamp Leveling Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.