NetworkU017F

Serious

Severity: Serious - have it checked soon

Lost Communication With Seat Belt Pretensioner Module B

23 brands affected · Generic SAE J2012 description.

Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list

Safety: This code relates to the airbag or seat-belt restraint system. An airbag may not deploy in a crash.

1What it means in plain English

Control modules in the car cannot communicate with each other over the vehicle network.

2Common causes

Wiring or connector fault on the communication bus
Faulty control module
Low battery voltage or poor ground
Water ingress in a connector or module
Aftermarket device interfering with the bus

3Can I drive?

Serious · drive with care

The car may run normally or may not run at all. If the module that has lost communication controls steering, brakes, park brake, charging or engine cooling, drive only if those systems feel normal; stop safely if the steering becomes heavy, a brake warning appears, or the engine temperature climbs. If the car will not start or runs badly, have it towed.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 23

Brand	Code	Description	System
Ashok Leyland CV	U017F	Lost Communication With Seat Belt Pretensioner Module B SAE	Network
BAIC Motor	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
BYD	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
Chery	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
Daewoo	U017F	Lost Communication With Seat Belt Pretensioner Module B SAE	Network
DFFS	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
DFFX	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
DFXK	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
EOBD	U017F	Kaotatud side turvavöö pinguti mooduliga 'B' Brand	Network
Geely	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
GM	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
Great Wall	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
Hafei	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
Holden	U017F	Lost Communication With Seat Belt Pretensioner Module B SAE	Network
Honda	U017F	Electronic pretensioner unit communication error (automatic drive unit) Possible fault location and cause Electronic pretensioner unit fault CAN bus open/short circuit ECU internal fault Brand	Network
Hyundai	U017F	Lost Communication With Seat Belt Pretensioner Module B SAE	Network
Land Rover	U017F	Lost communication with safety belt pretensioner module 'B' Brand	Network
Opel	U017F	Lost Communication With Seatbelt Pretensioner Module 'B Brand	Network
Peugeot	U017F	Lost Communication With Seat Belt Pretensioner Module B SAE	Network
Proton	U017F	Lost Communication With Seat Belt Pretensioner Module B SAE	Network
Saab	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
MG (SAIC)	U017F	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network
Toyota	U017F	Lost communication with seatbelt pretensioner module 'B' Brand	Network

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of U017F and may be reported by some scan tools.

Brand	Code	Description	System
Volkswagen	U017F00	Lost Communication With Seatbelt Pretensioner Module 'B' Brand	Network

6Related codes

Browse Uxxx codes or U017xx codes.