ChassisC0274

Caution

Severity: Caution - get it checked when you can

ABS motor relay shorted

11 brands affected · Description from GM data.

Key terms: ABS: anti-lock braking, which stops the wheels locking · Stability control: helps stop the car skidding · Wheel speed sensor: measures how fast each wheel turns

1What it means in plain English

A chassis system has a fault, usually ABS, traction control or stability control, but some makes use this range for airbags, electric power steering or park brakes.

2Common causes

Faulty wheel speed sensor
Damaged sensor ring or wiring
Faulty ABS module
Low brake fluid
Wheel bearing damage

3Can I drive?

Caution · drive with care

If the code names an airbag or SRS system, the airbag may not deploy in a crash: have it diagnosed promptly. If it names electric power steering, the assist may fail and the steering can become heavy: stop safely if that happens. If it names the brakes or park brake, have it checked before driving when braking feels abnormal. Otherwise ABS and stability control may be disabled: drive carefully, especially in wet conditions, and have it checked soon.

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 11

Brand	Code	Description	System
Ashok Leyland CV	C0274	No description available	Chassis
Daewoo	C0274	No description available	Chassis
Daihatsu	C0274	Motor relay shorted Brand	Chassis
GM	C0274	ABS motor relay shorted Brand	Chassis
Holden	C0274	Isolation Valve Brand	Chassis
Isuzu	C0274	No description available	Chassis
Opel	C0274	ABS motor relay shorted Brand	Chassis
Perodua	C0274	Motor relay shorted Brand	Chassis
Peugeot	C0274	No description available	Chassis
Saab	C0274	ABS Motor Relay Shorted Brand	Chassis
Toyota	C0274	No description available	Chassis

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 C0274 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	C027400	AvRr defect due to Valve-Driver-ASIC Qx-Feedback. Brand	Chassis

6Related codes

Browse Cxxx codes or C027xx codes.