Fault code lookup

NetworkU1726

Serious

Severity: Serious - have it checked soon

Lost Communication with Inflatable Restraint Sensing and Diagnostic Module

9 brands affected · Description from Holden data.

Key terms: Control module: a small computer that runs one part of the car

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

  1. Wiring or connector fault on the communication bus
  2. Faulty control module
  3. Low battery voltage or poor ground
  4. Water ingress in a connector or module
  5. 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 9

BrandCodeDescriptionSystem
DaewooU1726No description available Network
EOBDU1726Airbag-nod BrandNetwork
FordU1726No description available Network
GMU1726No description available Network
HoldenU1726Lost Communication with Inflatable Restraint Sensing and Diagnostic Module BrandNetwork
MazdaU1726No description available Network
OpelU1726No description available Network
PeugeotU1726No description available Network
SaabU1726No description available 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.

5Related codes

Browse Uxxx codes or U172xx codes.

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