BodyB1209

Caution

Severity: Caution - get it checked when you can

Vehicle distance warning function or adaptive cruise control function information failure

22 brands affected · Description from Toyota data.

Key terms: Control module: a small computer that runs one part of the car

1What it means in plain English

A body system has a fault. Depending on the make, this range can include airbags and seat belts, windows, locks and climate control, and also charging, brake, oil or coolant sensors.

2Common causes

Wiring or connector fault
Faulty sensor or switch
Water or corrosion in a connector
Control module fault
Low battery voltage

3Can I drive?

Caution · drive with care

Do not assume this code is safe to drive. If it concerns the brakes, brake vacuum, charging/alternator, engine oil or coolant, have it diagnosed before driving. Airbags or seat belts may not work in a crash, and a brake or charging fault can leave the car unsafe or stranded. For convenience systems (windows, locks, climate), have it checked when convenient.

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 22

Brand	Code	Description	System
Ashok Leyland CV	B1209	No description available	Body
Mercedes-Benz	B1209	No description available	Body
Chery	B1209	Rear left window down control circuit Brand	Body
Daewoo	B1209	No description available	Body
DFFS	B1209	Distance warning function or adaptive cruise control (ACC) function information failure Brand	Body
Geely	B1209	Front Passenger Igniter Resistance High Brand	Body
GM	B1209	No description available	Body
Holden	B1209	Frontal Collision Detected Brand	Body
Honda	B1209	No description available	Body
Hyundai	B1209	No description available	Body
Land Rover	B1209	No description available	Body
Mitsubishi	B1209	Test mode Brand	Body
Opel	B1209	No description available	Body
Peugeot	B1209	No description available	Body
Proton	B1209	Test mode Brand	Body
Saab	B1209	No description available	Body
Smart	B1209	No description available	Body
Sprinter	B1209	No description available	Body
Suzuki	B1209	Rear Left sensor crush detected Brand	Body
SWM Motor	B1209	The outside temperature sensor circuit is short circuit to ground Brand	Body
Tata	B1209	Rear Wash Motor Circuit Failure Brand	Body
Toyota	B1209	Vehicle distance warning function or adaptive cruise control function information failure Brand	Body

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 12

These 7-character codes are manufacturer-specific variants of B1209 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	B120900	Left side spindle motor overcurrent Brand	Body
Mercedes-Benz	B120901	Der Temperatursensor 'Sitzwangen der Sitzlehne' hat Funktionsstörung. Es liegt ein allgemeiner elektrischer Fehler vor. Brand	Body
Mahindra	B120901	Left Curtain Airbag - Cross Connect Brand	Body
Mahindra	B120911	Passenger Curtain Airbag - Short To Ground Brand	Body
Mahindra	B120912	Passenger Curtain Airbag - Short To Battery Brand	Body
Mahindra	B120913	Passenger Curtain Airbag - High Resistance Brand	Body
Mahindra	B120919	Passenger Curtain Airbag - Cross Connect Brand	Body
SsangYong	B120919	Left side spindle motor overcurrent Brand	Body
Mahindra	B12091A	Passenger Curtain Airbag - Low Resistance Brand	Body
Mahindra	B12091B	Left Curtain Airbag - High Resistance Brand	Body
Mahindra	B120955	Passenger Side Curtain Airbag Configuration Error Brand	Body
Mahindra	B120964	Left Side Curtain Airbag Unexpected Squib Brand	Body

6Related codes

Browse Bxxx codes or B120xx codes.