BodyB1504

Caution

Severity: Caution - get it checked when you can

Brake pedal angle signal voltage is low

26 brands affected · Description from Toyota data.

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

Safety: This code relates to the braking system. Have braking checked promptly.

1What it means in plain English

The brake pedal angle signal is lower than expected, so brake assistance or the brake-light signal may not work as intended.

2Common causes

Faulty brake pedal position sensor
Damaged wiring or connector
Brake pedal travel or pedal stop problem
Misadjusted brake light switch
Body control module fault

3Can I drive?

Caution · drive with care

Braking may be affected or the brake lights may not work. Have it checked promptly; if the pedal feels abnormal or the brake lights do not come on, do not drive.

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
Ashok Leyland CV	B1504	No description available	Body
Mercedes-Benz	B1504	No description available	Body
BYD	B1504	RR curtain ABG active circuit SH Brand	Body
Chery	B1504	SK not produced Brand	Body
Daewoo	B1504	No description available	Body
Daihatsu	B1504	Steering SW communication interrupted Brand	Body
DFFS	B1504	Brake pedal angle signal voltage is low Brand	Body
DFFX	B1504	RR curtain ABG active circuit SH Brand	Body
Geely	B1504	RR curtain ABG active circuit SH Brand	Body
GM	B1504	No description available	Body
Great Wall	B1504	RR curtain ABG active circuit SH Brand	Body
Hafei	B1504	RR curtain ABG active circuit SH Brand	Body
Holden	B1504	Sunload Sensor Circuit Brand	Body
Hyundai	B1504	No description available	Body
Land Rover	B1504	No description available	Body
Maserati	B1504	Left steering wheel control switch circuit open/short to battery Brand	Body
Mitsubishi	B1504	RR curtain ABG active circuit SH Brand	Body
Opel	B1504	No description available	Body
Perodua	B1504	Steering SW communication interrupted Brand	Body
Peugeot	B1504	No description available	Body
Proton	B1504	RR curtain ABG active circuit SH Brand	Body
Saab	B1504	No description available	Body
Sprinter	B1504	No description available	Body
Subaru	B1504	No description available	Body
Suzuki	B1504	Driver Side Sunload Sensor and/or Its Circuit Malfunction Brand	Body
Toyota	B1504	Brake pedal angle signal voltage is low 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 B1504 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	B150400	Die Tastengruppe des Multifunktions-Lenkrads links hat Funktionsstörung. Brand	Body
Sprinter	B150400	No description available	Body
SsangYong	B150400	Problem at running status of SoC Brand	Body
Mahindra	B150496	FR door Hall sensor (If applicable) failure Brand	Body

6Related codes

Browse Bxxx codes or B150xx codes.