NetworkU0111

Serious

Severity: Serious - have it checked soon

Lost Communication With Battery Energy Control Module A

36 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

Wiring or connector fault on the communication bus
Faulty control module
Low battery voltage or poor ground
Water ingress in a connector or module
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 36

Brand	Code	Description	System
Ashok Leyland CV	U0111	Throttle/Pedal Position Sensor/Switch B Circuit High Brand	Network
BAIC Motor	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
Mercedes-Benz	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
BYD	U0111	Communication fault with battery management Brand	Network
Chery	U0111	No CAN message received from BMS Brand	Network
Daewoo	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
Daihatsu	U0111	BMS communication blackout Brand	Network
DFFS	U0111	Bus fault Brand	Network
DFFX	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
DFXK	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
EOBD	U0111	Kaotatud side akupatarei juhtimismooduliga A Brand	Network
Ford	U0111	SOBDMC DTC mevcut Brand	Network
Geely	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
GM	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
Great Wall	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
Hafei	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
Holden	U0111	Lost Communication with Auxiliary Body Control Module Brand	Network
Honda	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
Hyundai	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
Isuzu	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
Land Rover	U0111	Lost communication with the battery energy control module A Brand	Network
Maserati	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
Mitsubishi	U0111	BMU CAN timeout Brand	Network
Opel	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
Perodua	U0111	BMS communication blackout Brand	Network
Peugeot	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
Porsche	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
Proton	U0111	BMU CAN timeout Brand	Network
Saab	U0111	Lost Communication With Battery Energy Control Module A Brand	Network
MG (SAIC)	U0111	Check Node Missing Brand	Network
Sprinter	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
Subaru	U0111	Lost Communication With Battery Energy Control Module A SAE	Network
Suzuki	U0111	Lost Communication With Battery Energy Control Module 'A Brand	Network
Tata	U0111	Lost Communication With Battery Energy Control Module 'A' Brand	Network
Toyota	U0111	Communication with BPM lost Brand	Network
Volkswagen	U0111	No Communication with Battery Energy Control Module Brand	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.

5Extended variant codes 4

These 7-character codes are manufacturer-specific variants of U0111 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	U011100	Die Kommunikation mit dem Steuergerät Batterie hat Funktionsstörung Brand	Network
SsangYong	U011100	CAN communication: Battery Management System (BMS) communication error - timeout Brand	Network
Mercedes-Benz	U011181	Communication with control unit 'Battery' has a malfunction. Invalid Serial Data Received. Brand	Network
SsangYong	U011187	CAN time-out BCM Brand	Network

6Related codes

Browse Uxxx codes or U011xx codes.