NetworkU1014

Serious

Severity: Serious - have it checked soon

Loss of serial communications for class 2 devices

25 brands affected · Description from GM 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 25

Brand	Code	Description	System
Ashok Leyland CV	U1014	No description available	Network
BAIC Motor	U1014	CAN engine torque signals error Brand	Network
Mercedes-Benz	U1014	No description available	Network
BYD	U1014	CAN engine torque signals error Brand	Network
Chery	U1014	BMS and HVMU module communication abnormality Brand	Network
Chrysler	U1014	Internal CAN Communication Brand	Network
Daewoo	U1014	Loss of serial communications for class 2 devices Brand	Network
EOBD	U1014	No description available	Network
Geely	U1014	Engine Torque CAN Signal Malfunction Brand	Network
GM	U1014	Loss of serial communications for class 2 devices Brand	Network
Great Wall	U1014	CAN engine torque signals error Brand	Network
Holden	U1014	No description available	Network
Hyundai	U1014	No description available	Network
Isuzu	U1014	No description available	Network
Land Rover	U1014	APIX2 display link - User interface panel - Link 2 Brand	Network
Mahindra	U1014	No description available	Network
Maserati	U1014	No description available	Network
Mitsubishi	U1014	No description available	Network
Opel	U1014	Loss of serial communications for class 2 devices Brand	Network
Peugeot	U1014	No description available	Network
Proton	U1014	No description available	Network
Saab	U1014	Loss of serial communications for class 2 devices Brand	Network
Smart	U1014	No description available	Network
Sprinter	U1014	No description available	Network
Tata	U1014	No description available	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 U1014 and may be reported by some scan tools.

Brand	Code	Description	System
Volkswagen	U101400	Fault Control unit wrongly coded is entered in the fault memory Brand	Network

6Related codes

Browse Uxxx codes or U101xx codes.