BodyB1321

Caution

Severity: Caution - get it checked when you can

Neck heater load reduction

24 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 24

Brand	Code	Description	System
Ashok Leyland CV	B1321	Active Air Dam. Control Circuit. High Signal Brand	Body
Mercedes-Benz	B1321	No description available	Body
BYD	B1321	Comm.error Brand	Body
Chery	B1321	Comm.error Brand	Body
Daewoo	B1321	Trunk lid Lock Motor,Low input in open Mode Brand	Body
DFFS	B1321	Neck heater load reduction Brand	Body
DFFX	B1321	Comm.error Brand	Body
Geely	B1321	MIL short to power Brand	Body
GM	B1321	A/C low side temperature sensor fault Brand	Body
Great Wall	B1321	Comm.error Brand	Body
Hafei	B1321	Comm.error Brand	Body
Holden	B1321	Right Front Tweeter Brand	Body
Hyundai	B1321	No description available	Body
Land Rover	B1321	Ambient lighting zone 3 output Brand	Body
Mitsubishi	B1321	Comm.error Brand	Body
Opel	B1321	A/C low side temperature sensor fault Brand	Body
Peugeot	B1321	No description available	Body
Proton	B1321	Comm.error Brand	Body
Saab	B1321	A/C low side temperature sensor fault Brand	Body
Smart	B1321	No description available	Body
Sprinter	B1321	No description available	Body
Suzuki	B1321	Left side-air bag resistance high Brand	Body
Tata	B1321	No description available	Body
Toyota	B1321	Neck heater load reduction 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 4

These 7-character codes are manufacturer-specific variants of B1321 and may be reported by some scan tools.

Brand	Code	Description	System
Mahindra	B132111	Start Stop Switch-2 Short Circuit to Ground Brand	Body
Mahindra	B132112	Start Stop Switch-2 Short Circuit to Battery Brand	Body
Mahindra	B132113	Start Stop Switch-2 Open Circuit Brand	Body
Mahindra	B132123	Start Stop Switch-2 Stuck low Brand	Body

6Related codes

Browse Bxxx codes or B132xx codes.