NetworkU0404

Serious

Severity: Serious - have it checked soon

Invalid Data Received From Gear Shift 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	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
BAIC Motor	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
Mercedes-Benz	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
BYD	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
Chery	U0404	Physical Plausibility TSC Brand	Network
Chrysler	U0404	Implausible Data Received From ESM Brand	Network
Daewoo	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
DFFS	U0404	Gear information is inconsistent Brand	Network
DFFX	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
DFXK	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
EOBD	U0404	Ugyldig data mottatt fra girskiftstyringsmodul A Brand	Network
Fiat	U0404	Implausible data received from ESM Brand	Network
Geely	U0404	Shift Lever CAN Signal Out of Range or Invalid Brand	Network
GM	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
Great Wall	U0404	Physical plausibility TSC Brand	Network
Hafei	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
Holden	U0404	Invalid Data Received From Transmission Control Module Brand	Network
Honda	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Hyundai	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Isuzu	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Land Rover	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Maserati	U0404	Implausible Data Received From Electronic Shift Modules Brand	Network
Mitsubishi	U0404	AS&G Parity/Toggle bit error Brand	Network
Nissan	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Opel	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
Peugeot	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Porsche	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Proton	U0404	AS&G Parity/Toggle bit error Brand	Network
Saab	U0404	Invalid Data Received From Gear Shift Control Module A Brand	Network
MG (SAIC)	U0404	Invalid Data Received From Gear Shift Control Module Brand	Network
Smart	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Sprinter	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Subaru	U0404	Invalid Data Received From Gear Shift Control Module A SAE	Network
Tata	U0404	Invalid Data Received From Gear Shift Control Module Brand	Network
Toyota	U0404	CAN received invalid data received from TCM Brand	Network
Volkswagen	U0404	Selector lever implausible signal 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 5

These 7-character codes are manufacturer-specific variants of U0404 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	U040400	Implausible data were received from the electronic selector lever module. Brand	Network
SsangYong	U040400	CAN communication: Shift-by-Wire (SBW) signal error (EWM230) Brand	Network
SsangYong	U040486	CAN communication: Transmission Control Unit (TCU)/EWM message signal error Brand	Network
Mercedes-Benz	U0404FB	Implausible data were received from the electronic selector lever module. Counter byte when corresponding SAE Code is used more than one time Brand	Network
Mercedes-Benz	U0404FC	SSC: ISM Failure Brand	Network

6Related codes

Browse Uxxx codes or U040xx codes.