ChassisC1028

Caution

Severity: Caution - get it checked when you can

ABS Primary Circuit Wheel Pressure

15 brands affected · Description from Land Rover 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 15

Brand	Code	Description	System
BAIC Motor	C1028	Rear right wheel speed intermittent fault Brand	Chassis
Mercedes-Benz	C1028	No description available	Chassis
Daewoo	C1028	No description available	Chassis
DFFS	C1028	ECU internal power supply fault Brand	Chassis
Geely	C1028	Rear right wheel speed intermittent fault Brand	Chassis
GM	C1028	No description available	Chassis
Holden	C1028	Steering Wheel Angle Sensor Brand	Chassis
Land Rover	C1028	ABS Primary Circuit Wheel Pressure Brand	Chassis
Mahindra	C1028	OVERRUN FAILURE Brand	Chassis
Opel	C1028	No description available	Chassis
Peugeot	C1028	No description available	Chassis
Saab	C1028	No description available	Chassis
Maxus (SAIC)	C1028	2. Check if the AD voltage of the gradient sensor exceeds the range of 2.5 +/- 0.5V, if it exceeds this range, it means that the origin value of the gradient sensor exceeds the allowable range of calibration Brand	Chassis
MG (SAIC)	C1028	2. Check if the AD voltage of the gradient sensor exceeds the range of 2.5 +/- 0.5V, if it exceeds this range, it means that the origin value of the gradient sensor exceeds the allowable range of calibration Brand	Chassis
Suzuki	C1028	Master cylinder pressure sensor circuit failure Brand	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.

5Related codes

Browse Cxxx codes or C102xx codes.