BodyB1040

Caution

Severity: Caution - get it checked when you can

Lamp Unit

26 brands affected · Description from Land Rover 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 26

Brand	Code	Description	System
Mercedes-Benz	B1040	No description available	Body
BYD	B1040	A/M damper potentio. performance Brand	Body
Chery	B1040	Crash signal receiving fault Brand	Body
Daewoo	B1040	No description available	Body
DFFS	B1040	Navigation controller internal fault Brand	Body
DFFX	B1040	A/M damper potentio. performance Brand	Body
Geely	B1040	A/M damper potentio. performance Brand	Body
GM	B1040	No description available	Body
Great Wall	B1040	A/M damper potentio. performance Brand	Body
Hafei	B1040	A/M damper potentio. performance Brand	Body
Holden	B1040	Electronic Control Unit Brand	Body
Honda	B1040	No description available	Body
Hyundai	B1040	No description available	Body
Land Rover	B1040	Lamp Unit Brand	Body
Mahindra	B1040	Driver Retractor Pretensioner short to ground Brand	Body
Maserati	B1040	Panel Mode Door 1 Control-Commanded Position Not Reachable Brand	Body
Mitsubishi	B1040	A/M damper potentio. performance Brand	Body
Opel	B1040	No description available	Body
Peugeot	B1040	No description available	Body
Proton	B1040	A/M damper potentio. performance Brand	Body
Saab	B1040	No description available	Body
MG (SAIC)	B1040	FL Position Lamp Open Circuit Brand	Body
Smart	B1040	No description available	Body
Sprinter	B1040	No description available	Body
Suzuki	B1040	No description available	Body
Tata	B1040	No description available	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 2

These 7-character codes are manufacturer-specific variants of B1040 and may be reported by some scan tools.

Brand	Code	Description	System
Hyundai	B104052	When setting variant coding, if the LDWS option is added to the vehicle not equipped with LDWS, sets DTC Brand	Body
Hyundai	B104055	When setting variant coding, if the LDWS option is not added to the vehicle equipped with LDWS, sets DTC Brand	Body

6Related codes

Browse Bxxx codes or B104xx codes.