ChassisC1206

Caution

Severity: Caution - get it checked when you can

Power supply voltage too low

28 brands affected · Description from Toyota 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 28

Brand	Code	Description	System
BAIC Motor	C1206	Battery under voltage Brand	Chassis
Mercedes-Benz	C1206	No description available	Chassis
BYD	C1206	FL wheel speed sensor signal Brand	Chassis
Chery	C1206	Software code check error Brand	Chassis
Daewoo	C1206	Rear Left Wheel Speed Sensor Short Circuit or Circuit Open Brand	Chassis
Daihatsu	C1206	Throttle signal (idle SW) abnormal Brand	Chassis
DFFS	C1206	Battery voltage too low Brand	Chassis
DFFX	C1206	FL wheel speed sensor signal Brand	Chassis
Geely	C1206	FL wheel speed sensor signal Brand	Chassis
GM	C1206	No description available	Chassis
Great Wall	C1206	FL wheel speed sensor signal Brand	Chassis
Hafei	C1206	FL wheel speed sensor signal Brand	Chassis
Holden	C1206	Electronic Brake Control Module Serial Peripheral Interface Malfunction Brand	Chassis
Hyundai	C1206	No description available	Chassis
Mahindra	C1206	AEB is disabled by FRM due to Steering override Brand	Chassis
Maserati	C1206	No description available	Chassis
Mitsubishi	C1206	FL wheel speed sensor signal Brand	Chassis
Opel	C1206	No description available	Chassis
Perodua	C1206	Throttle signal (idle SW) abnormal Brand	Chassis
Peugeot	C1206	No description available	Chassis
Proton	C1206	FL wheel speed sensor signal Brand	Chassis
Saab	C1206	No description available	Chassis
MG (SAIC)	C1206	SPI Failure/ECU defective Brand	Chassis
Smart	C1206	No description available	Chassis
Suzuki	C1206	No description available	Chassis
Tata	C1206	Wheel-speed Sensor Brand	Chassis
Toyota	C1206	Power supply voltage too low Brand	Chassis
Volkswagen	C1206	Seat squab locking switch - passenger's 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 6

These 7-character codes are manufacturer-specific variants of C1206 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	C120600	Ventil Plausibilitätsfehler Brand	Chassis
SsangYong	C120600	EPB Switch signal failure- Stuck Brand	Chassis
SsangYong	C120601	Electronic Parking Brake (EPB) switch signal error Brand	Chassis
SsangYong	C120606	Electronic Parking Brake (EPB) switch error Brand	Chassis
Mercedes-Benz	C120691	The radar sensor is blocked by dirt or a foreign object. The parameter is outside the permissible range. Brand	Chassis
Mercedes-Benz	C120697	The radar sensor is blocked by dirt or a foreign object. The system function is restricted. Brand	Chassis

6Related codes

Browse Cxxx codes or C120xx codes.