NetworkU049A

Serious

Severity: Serious - have it checked soon

Invalid data received from door control module A

23 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

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 23

Brand	Code	Description	System
Ashok Leyland CV	U049A	No description available	Network
BAIC Motor	U049A	Invalid Data Received From Door Control Module A Brand	Network
BYD	U049A	Invalid Data Received From Door Control Module A Brand	Network
Chery	U049A	Invalid Data Received From Door Control Module A Brand	Network
Daewoo	U049A	Invalid Data Received From Door Control Module A Brand	Network
DFFS	U049A	Invalid Data Received From Door Control Module A Brand	Network
DFFX	U049A	Invalid Data Received From Door Control Module A Brand	Network
DFXK	U049A	Invalid Data Received From Door Control Module A Brand	Network
EOBD	U049A	Ogiltig data mottagen från dörrstyrenhet A Brand	Network
Geely	U049A	Invalid Data Received From Door Control Module A Brand	Network
GM	U049A	Invalid Data Received From Door Control Module A Brand	Network
Great Wall	U049A	Invalid Data Received From Door Control Module A Brand	Network
Hafei	U049A	Invalid Data Received From Door Control Module A Brand	Network
Holden	U049A	No description available	Network
Hyundai	U049A	No description available	Network
Land Rover	U049A	Invalid data received from the door control module A Brand	Network
Maserati	U049A	Implausible data received from Driver Door Module (DDM) Brand	Network
Opel	U049A	Invalid Data Received From Door Control Module A Brand	Network
Peugeot	U049A	No description available	Network
Porsche	U049A	No description available	Network
Saab	U049A	Invalid Data Received From Door Control Module A Brand	Network
MG (SAIC)	U049A	DDSP LIN Error Brand	Network
Toyota	U049A	Invalid data received from door 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 1

These 7-character codes are manufacturer-specific variants of U049A and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	U049A29	Das Signal BSM_WarnUnit_Lt_Stat_ST3 oder BSM_WarnUnit_Rt_Stat_ST3 vom Türsteuergerät DM_SG zeigt einen Fehler oder einen ungültigem Wert an. Brand	Network

6Related codes

Browse Uxxx codes or U049xx codes.