Fault code lookup

NetworkU025D

Serious

Severity: Serious - have it checked soon

Lost communication with front controls interface module 'B'

18 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 18

BrandCodeDescriptionSystem
Ashok Leyland CVU025DInformation BrandNetwork
BAIC MotorU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
BYDU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
CheryU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
DFFSU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
DFFXU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
DFXKU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
EOBDU025DKaotatud side esipaneeli juhtimismooduliga 'B' BrandNetwork
GeelyU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
GMU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
Great WallU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
HafeiU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
HyundaiU025DNo description available Network
Land RoverU025DLost communication with front controls interface module B BrandNetwork
PeugeotU025DNo description available Network
SaabU025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
MG (SAIC)U025DLost Communication With Front Controls Interface Module 'B' BrandNetwork
ToyotaU025DLost communication with front controls interface module 'B' 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

  • U0250 Lost Communication With Impact Classification System Module
  • U0251 Lost Communication With Running Board Control Module B
  • U0252 Lost Communication With Lighting Control Module - Rear B
  • U0253 Lost Communication With Accessory Protocol Interface Module
  • U0254 Lost Communication With Remote Start Module
  • U0255 Lost Communication With Front Display Interface Module
  • U0256 Lost Communication With Front Controls Interface Module A
  • U0257 Lost Communication With Front Controls/Display Interface Module
  • U0258 Lost communication with battery cooling system
  • U0259 Lost communication with special purpose vehicle control module 'A'
  • U025A Lost communication with gear P
  • U025B Lost communication with special purpose vehicle control module 'C'

Browse Uxxx codes or U025xx codes.

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