BodyB127A

Caution

Severity: Caution - get it checked when you can

Self-cruise control and cruise control function selection button failure

9 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 9

Brand	Code	Description	System
Daewoo	B127A	No description available	Body
DFFS	B127A	Self-cruise control and cruise control function selection button failure Brand	Body
GM	B127A	No description available	Body
Holden	B127A	Auxiliary Video Input Signal Circuit Brand	Body
Land Rover	B127A	Global Window Control Brand	Body
Opel	B127A	No description available	Body
Peugeot	B127A	No description available	Body
Saab	B127A	No description available	Body
Toyota	B127A	Self-cruise control and cruise control function selection button 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 4

These 7-character codes are manufacturer-specific variants of B127A and may be reported by some scan tools.

Brand	Code	Description	System
Porsche	B127A01	No description available	Body
Porsche	B127A02	Video link to SV left camera - init fault Brand	Body
Porsche	B127A13	Video link to SV left camera - Connection Error Brand	Body
Porsche	B127A29	Video link to SV left camera - implausible signal Brand	Body

6Related codes

Browse Bxxx codes or B127xx codes.