NetworkU019B

Serious

Severity: Serious - have it checked soon

Lost Communication With Battery Charger Control Module A

14 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 14

Brand	Code	Description	System
Ashok Leyland CV	U019B	Lost Communication With Battery Charger Control Module A SAE	Network
Mercedes-Benz	U019B	Lost Communication With Battery Charger Control Module A SAE	Network
DFFS	U019B	CAN communication abnormal Brand	Network
EOBD	U019B	Kaotatud side laadija juhtmooduliga 'A' Brand	Network
Honda	U019B	Lost Communication With Battery Charger Control Module A SAE	Network
Hyundai	U019B	Lost Communication With Battery Charger Control Module A SAE	Network
Isuzu	U019B	Lost Communication With Battery Charger Control Module A SAE	Network
Land Rover	U019B	Lost Communication With Battery Charger Control Module Brand	Network
Proton	U019B	Lost Communication With Battery Charger Control Module A SAE	Network
Maxus (SAIC)	U019B	Lost Communication With WPC Brand	Network
MG (SAIC)	U019B	Lost Communication With WPC Brand	Network
Subaru	U019B	Lost Communication With Battery Charger Control Module A SAE	Network
Suzuki	U019B	Lost Communication With Battery Charger Control Module A SAE	Network
Toyota	U019B	Lost communication with battery charger control module 'A' 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 10

These 7-character codes are manufacturer-specific variants of U019B and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	U019B00	Communication with the on-board charger has a malfunction. Brand	Network
Mercedes-Benz	U019B04	Communication with the on-board charger has a malfunction. There is an internal fault. Brand	Network
Mercedes-Benz	U019B05	Communication with the on-board charger has a malfunction. There is a programming fault. Brand	Network
Mercedes-Benz	U019B08	Communication with the on-board charger has a malfunction. There is a signal fault or the message is faulty. Brand	Network
Mercedes-Benz	U019B13	Communication with the on-board charger has a malfunction - There is an open circuit. Brand	Network
Mercedes-Benz	U019B14	Communication with the on-board charger has a malfunction - There is a short circuit to ground or an open circuit. Brand	Network
Mercedes-Benz	U019B26	Communication with the on-board charger has a malfunction. The signal change rate is below the permissible limit value. Brand	Network
Mercedes-Benz	U019B29	Communication with the on-board charger has a malfunction. There is an invalid signal. Brand	Network
Mercedes-Benz	U019B2F	Communication with the on-board charger has a malfunction. There is an erratic signal. Brand	Network
Mercedes-Benz	U019BFA	Communication with the on-board charger has a malfunction. Internal CAN CRC. Brand	Network

6Related codes

Browse Uxxx codes or U019xx codes.