Fault code lookup

NetworkU0059

Serious

Severity: Serious - have it checked soon

Vehicle communication bus D (+) high

20 brands affected · Description from Toyota 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 20

BrandCodeDescriptionSystem
Ashok Leyland CVU0059No description available Network
BAIC MotorU0059Vehicle Communication Bus D (+) High BrandNetwork
BYDU0059Vehicle Communication Bus D (+) High BrandNetwork
CheryU0059Vehicle Communication Bus D (+) High BrandNetwork
DaewooU0059Vehicle Communication Bus D (+) High BrandNetwork
DFFSU0059Vehicle Communication Bus D (+) High BrandNetwork
DFFXU0059Vehicle Communication Bus D (+) High BrandNetwork
DFXKU0059Vehicle Communication Bus D (+) High BrandNetwork
EOBDU0059Sõiduki sidebuss D (+) kõrge BrandNetwork
GeelyU0059Vehicle Communication Bus D (+) High BrandNetwork
GMU0059Vehicle Communication Bus D (+) High BrandNetwork
Great WallU0059Vehicle Communication Bus D (+) High BrandNetwork
HafeiU0059Vehicle Communication Bus D (+) High BrandNetwork
HyundaiU0059No description available Network
Land RoverU0059Vehicle communication bus D(+) high BrandNetwork
PeugeotU0059No description available Network
SaabU0059Vehicle Communication Bus D (+) High BrandNetwork
MG (SAIC)U0059Vehicle Communication Bus D (+) High BrandNetwork
TataU0059Vehicle Communication Bus D (+) High BrandNetwork
ToyotaU0059Vehicle communication bus D (+) high 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 U005xx codes.

OpenDTC - independent fault code reference