NetworkU1262

Serious

Severity: Serious - have it checked soon

J1850 SCP Comm Bus Fault - Instr Clstr

13 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 13

Brand	Code	Description	System
Daewoo	U1262	J1850 SCP Comm Bus Fault - Instr Clstr Brand	Network
DFFS	U1262	Vehicle distance alarm ECU sends disabled data Brand	Network
EOBD	U1262	Motor flap suhu Brand	Network
Ford	U1262	Note: Either DTC(Diagnostic Trouble Codes) U1147 or (both with flash code16) may be raised during the PATS(Passive Anti Theft System) selector process Brand	Network
GM	U1262	J1850 SCP Comm Bus Fault - Instr Clstr Brand	Network
Holden	U1262	Invalid Data Received From Cruise Control Module Brand	Network
Honda	U1262	No description available	Network
Land Rover	U1262	No description available	Network
Mazda	U1262	Note: Either DTC(Diagnostic Trouble Codes) U1147 or (both with flash code16) may be raised during the PATS(Passive Anti Theft System) selector process Brand	Network
Opel	U1262	J1850 SCP Comm Bus Fault - Instr Clstr Brand	Network
Peugeot	U1262	No description available	Network
Proton	U1262	No description available	Network
Saab	U1262	J1850 SCP Comm Bus Fault - Instr Clstr 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 U1262 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	U126283	CAN communication: Electric Power Steering (EPS) checksum error (231) Brand	Network

6Related codes

Browse Uxxx codes or U126xx codes.