Fault code lookup

NetworkU1190

Serious

Severity: Serious - have it checked soon

Loss of serial communications for class 2 devices

14 brands affected · Description from GM data.

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

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 14

BrandCodeDescriptionSystem
BYDU1190No receive fault detect signal BrandNetwork
CheryU1190No receive fault detect signal BrandNetwork
DaewooU1190Loss of serial communications for class 2 devices BrandNetwork
DFFXU1190No receive fault detect signal BrandNetwork
EOBDU1190Nincs jel BrandNetwork
GeelyU1190No receive fault detect signal BrandNetwork
GMU1190Loss of serial communications for class 2 devices BrandNetwork
Great WallU1190No receive fault detect signal BrandNetwork
HafeiU1190No receive fault detect signal BrandNetwork
MaseratiU1190Lost Communication with Humidity Sensor BrandNetwork
MitsubishiU1190No receive fault detect signal BrandNetwork
PeugeotU1190No description available Network
ProtonU1190No receive fault detect signal BrandNetwork
SaabU1190Loss of serial communications for class 2 devices BrandNetwork

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 U119xx codes.

OpenDTC - independent fault code reference