NetworkU0431

Serious

Severity: Serious - have it checked soon

Invalid Data Received From Body Control Module A

31 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 31

Brand	Code	Description	System
Ashok Leyland CV	U0431	Invalid Data Received From Body Control Module A SAE	Network
BAIC Motor	U0431	Invalid Data Received From Body Control Module A Brand	Network
Mercedes-Benz	U0431	Invalid Data Received From Body Control Module A SAE	Network
BYD	U0431	Invalid Data Received From Body Control Module A Brand	Network
Chery	U0431	Invalid Data Received From Body Control Module A Brand	Network
Daewoo	U0431	Invalid Data Received From Body Control Module A Brand	Network
DFFS	U0431	Invalid Data Received From Body Control Module A Brand	Network
DFFX	U0431	Invalid Data Received From Body Control Module A Brand	Network
DFXK	U0431	Invalid Data Received From Body Control Module A Brand	Network
EOBD	U0431	Kehtetu andmed saadud kere juhtmoodulilt A Brand	Network
Geely	U0431	Invalid Data Received From Body Control Module A Brand	Network
GM	U0431	Invalid Data Received From Body Control Module A Brand	Network
Great Wall	U0431	Invalid Data Received From Body Control Module A Brand	Network
Hafei	U0431	Invalid Data Received From Body Control Module A Brand	Network
Holden	U0431	Control Module Communication High Speed CAN Bus Off Brand	Network
Hyundai	U0431	Invalid Data Received From Body Control Module A SAE	Network
Isuzu	U0431	Invalid Data Received From Body Control Module A SAE	Network
Land Rover	U0431	Invalid data received from the body control module A Brand	Network
Maserati	U0431	Implausible data received from IPM (FCM/TIPM) Brand	Network
Mitsubishi	U0431	Invalid Data Received From Body Control Module A SAE	Network
Opel	U0431	Invalid Data Received From Body Control Module A Brand	Network
Peugeot	U0431	Invalid Data Received From Body Control Module A SAE	Network
Porsche	U0431	Invalid Data Received From Body Control Module A SAE	Network
Proton	U0431	Invalid Data Received From Body Control Module A SAE	Network
Saab	U0431	Invalid Data Received From Body Control Module A Brand	Network
MG (SAIC)	U0431	Invalid Data Received From Body Control Module A Brand	Network
Sprinter	U0431	Invalid Data Received From Body Control Module A SAE	Network
Subaru	U0431	Invalid Data Received From Body Control Module A SAE	Network
Tata	U0431	Invalid Data Received From Body Control Module 'A' Brand	Network
Toyota	U0431	Invalid data received from body control module A Brand	Network
Volkswagen	U0431	Implausible data received from body control module A (central Electric 2); Open circuit 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 28

These 7-character codes are manufacturer-specific variants of U0431 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	U043100	Unplausible Daten wurden vom Signalerfass- und Ansteuermodul vorn empfangen. Brand	Network
Porsche	U043100	No description available	Network
SsangYong	U043100	CAN: Error in Electronic ignition signal value:inconsistent ID -length Brand	Network
Mercedes-Benz	U043102	Ethernet Air temperature outside is out of limits or SNA Brand	Network
Mercedes-Benz	U043129	Das Signal INP_ELC_LSM_TurnInd_Dr_Lt_Flt_Disp_Rq zeigt einen Fehler an Brand	Network
Mercedes-Benz	U043141	Botschaften vom Lichtsteuergerät BCF_ELC zeigen einen Fehler im Botschaftszähler oder CRC-Fehler Brand	Network
Mercedes-Benz	U043182	Implausible data were received from the front signal acquisition and actuation module. The instruction counter is not updated. Brand	Network
Mercedes-Benz	U043186	Implausible data were received from the front signal acquisition and actuation module. There is an incorrect signal. Brand	Network
Mercedes-Benz	U0431E0	Das Signal INP_RainSens_Oprtn_Stat vom BC_F-Steuergerät zeigt einen Fehler an Brand	Network
Mercedes-Benz	U0431E1	Das Signal INP_Wpr_Oprtn_Stat vom BC_F-Steuergerät zeigt einen Fehler an Brand	Network
Mercedes-Benz	U0431E2	Das Signal INP_ELC_LSM_TurnInd_Dr_Lt_Flt_Disp_Rq zeigt einen Fehler an Brand	Network
Mercedes-Benz	U0431E3	Das Signal AirTemp_Outsd_ST3 wird mit einem ungültigen Wert empfangen Brand	Network
Mercedes-Benz	U0431E4	Botschaft Aussentemperatur vom BC_F SG zeigt fehler oder wurde fehlhaft vom IDC SG empfangen Brand	Network
Mercedes-Benz	U0431E5	Botschaften vom BC_F SG werden mit ungültigem Wert oder Fehler gesendet Brand	Network
Mercedes-Benz	U0431E6	Botschaften vom BC_F SG werden mit ungültigem Wert oder Fehler gesendet Brand	Network
Mercedes-Benz	U0431E7	Botschaften vom Lichtsteuergerät BC_F ELC werden mit ungültigem Wert oder Fehler gesendet Brand	Network
Mercedes-Benz	U0431E8	Das Signal EngHd_Pawl_Stat_ST3 wird mit einem ungültigem Wert empfangen Brand	Network
Mercedes-Benz	U0431E9	Botschaften vom BC_F SG werden mit ungültigem Wert oder Fehler gesendet Brand	Network
Mercedes-Benz	U0431EA	Das Signal EngHd_Pawl_Stat_ST3 wird mit einem ungültigem Wert empfangen Brand	Network
Mercedes-Benz	U0431EB	SADR-Botschaften vom BC_F SG wird mit einem ungültigem Wert empfangen Brand	Network
Mercedes-Benz	U0431EF	Scl_PN14_BackupBat_Flt_Invalid - Signal Value out of valid range Brand	Network
Mercedes-Benz	U0431F1	Botschaft vom BC_F SG wird zeitweise nicht empfangen Brand	Network
Mercedes-Benz	U0431F2	Botschaften vom BCF_SADR führen in der IDC zu einem kumulierten Fehler. Brand	Network
Mercedes-Benz	U0431FA	Das FlexRay-Signal ALDW_Sw_Md vom BC_F-SG ist fehlerhaft Brand	Network
Mercedes-Benz	U0431FB	SADR-Botschaften vom BCF-Steuergerät zeigen einen Fehler im SADR-Botschaftszähler oder CRC-Fehler Brand	Network
Mercedes-Benz	U0431FC	Fehlersignalisierung im Signal WprFltMsgDisp_Rq_WPRM Brand	Network
Mercedes-Benz	U0431FD	EIS (BC_F) zeigt defekten Blinker hinten rechts an (TurnLmp_RR_Flt = 1) Brand	Network
Mercedes-Benz	U0431FE	Blinker hinten links hat einen Fehler. Brand	Network

6Related codes

Browse Uxxx codes or U043xx codes.