ChassisC0548

Caution

Severity: Caution - get it checked when you can

Vacuum Sensor Supply Voltage Low

10 brands affected · Generic SAE J2012 description.

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 · SAE J2012: the standard generic code list

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 10

Brand	Code	Description	System
Ashok Leyland CV	C0548	Vacuum Sensor Supply Voltage Low SAE	Chassis
Mercedes-Benz	C0548	Vacuum Sensor Supply Voltage Low SAE	Chassis
Daewoo	C0548	Vacuum Sensor Supply Voltage Low SAE	Chassis
EOBD	C0548	Vakuumanduri toitepinge madal Brand	Chassis
GM	C0548	Vacuum Sensor Supply Voltage Low SAE	Chassis
Holden	C0548	Steering Column Lock Solenoid Actuator Locked Signal Circuit Brand	Chassis
Opel	C0548	Vacuum Sensor Supply Voltage Low SAE	Chassis
Peugeot	C0548	Vacuum Sensor Supply Voltage Low SAE	Chassis
Saab	C0548	Vacuum Sensor Supply Voltage Low SAE	Chassis
Toyota	C0548	Vacuum sensor supply voltage low 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.

5Extended variant codes 3

These 7-character codes are manufacturer-specific variants of C0548 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	C054800	Vacuum Sensor Supply Undervoltage Brand	Chassis
Mercedes-Benz	C054816	The power supply of the brake vacuum sensor is too low. Circuit Voltage Below Threshold. Brand	Chassis
Mercedes-Benz	C0548FF	Vacuum Sensor 5Volt Supply Undervoltage caused by 12V Undervoltage Brand	Chassis

6Related codes

Browse Cxxx codes or C054xx codes.