Fault code lookup

NetworkU0406

Serious

Severity: Serious - have it checked soon

Invalid Data Received From Fuel Injector Control Module

24 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

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 24

BrandCodeDescriptionSystem
Ashok Leyland CVU0406Invalid Data Received From Fuel Injector Control Module SAENetwork
BAIC MotorU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
BYDU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
CheryU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
DaewooU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
DFFSU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
DFFXU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
DFXKU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
EOBDU0406Kehtetu andme saadud kütusepihusti juhtmoodulilt BrandNetwork
GeelyU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
GMU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
Great WallU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
HafeiU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
HoldenU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
HyundaiU0406Invalid Data Received From Fuel Injector Control Module SAENetwork
IsuzuU0406Invalid Data Received From Fuel Injector Control Module SAENetwork
Land RoverU0406Invalid Data Received From Fuel Injector Control Module SAENetwork
MahindraU0406Invalid Data Received From Fuel Injector Control Module SAENetwork
OpelU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
PeugeotU0406Invalid Data Received From Fuel Injector Control Module SAENetwork
SaabU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
MG (SAIC)U0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
TataU0406Invalid Data Received From Fuel Injector Control Module BrandNetwork
ToyotaU0406Invalid data received from fuel injector control module 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 U040xx codes.

OpenDTC - independent fault code reference