NetworkU1013

Serious

Severity: Serious - have it checked soon

Control Module Not Coded

26 brands affected · Description from Volkswagen 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 26

Brand	Code	Description	System
Ashok Leyland CV	U1013	No description available	Network
BAIC Motor	U1013	CAN accelerator pedal signal error Brand	Network
Mercedes-Benz	U1013	No description available	Network
BYD	U1013	CAN accelerator pedal signal error Brand	Network
Chery	U1013	BMS and insulation module communication abnormality Brand	Network
Daewoo	U1013	Loss of serial communications for class 2 devices Brand	Network
DFFS	U1013	ECM Lost communication with battery sensor Brand	Network
EOBD	U1013	Styrmodul inte kodad Brand	Network
Geely	U1013	Accelerator Pedal CAN Signal Fault Brand	Network
GM	U1013	Loss of serial communications for class 2 devices Brand	Network
Great Wall	U1013	CAN accelerator pedal signal error Brand	Network
Holden	U1013	No description available	Network
Hyundai	U1013	No description available	Network
Isuzu	U1013	No description available	Network
Mahindra	U1013	No description available	Network
Maserati	U1013	No description available	Network
Mitsubishi	U1013	Driver demand torque signal Brand	Network
Opel	U1013	Loss of serial communications for class 2 devices Brand	Network
Peugeot	U1013	No description available	Network
Proton	U1013	Driver demand torque signal Brand	Network
Saab	U1013	Loss of serial communications for class 2 devices Brand	Network
Smart	U1013	No description available	Network
Sprinter	U1013	No description available	Network
Suzuki	U1013	No description available	Network
Tata	U1013	No description available	Network
Volkswagen	U1013	Control Module Not Coded 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 3

These 7-character codes are manufacturer-specific variants of U1013 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	U101300	MOST transceiver overtemperature Brand	Network
Porsche	U101300	Codificación Brand	Network
Volkswagen	U101300	Fault -Control unit not Brand	Network

6Related codes

Browse Uxxx codes or U101xx codes.