ChassisC1389

Serious

Severity: Serious - have it checked soon

Brake fluid level information failure

14 brands affected · Description from Toyota data.

Key terms: ABS: anti-lock braking, which stops the wheels locking · Stability control: helps stop the car skidding · Wheel speed sensor: measures how fast each wheel turns

Safety: This code relates to the braking system or brake assist. Braking may be affected.

1What it means in plain English

A chassis system has a fault, usually ABS, traction control or stability control, but some makes use this range for airbags, electric power steering or park brakes.

2Common causes

Faulty wheel speed sensor
Damaged sensor ring or wiring
Faulty ABS module
Low brake fluid
Wheel bearing damage

3Can I drive?

Serious · drive with care

Have it checked immediately: brakes or brake assistance may be affected. Do not drive if the pedal feels soft or hard, the car pulls when braking, or the brake warning light is on.

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 14

Brand	Code	Description	System
BYD	C1389	Straight G sensor active check Brand	Chassis
Chery	C1389	Straight G sensor active check Brand	Chassis
Daihatsu	C1389	Tachometer signal abnormal Brand	Chassis
DFFS	C1389	Brake fluid level information failure Brand	Chassis
DFFX	C1389	Straight G sensor active check Brand	Chassis
Geely	C1389	Straight G sensor active check Brand	Chassis
Great Wall	C1389	Straight G sensor active check Brand	Chassis
Hafei	C1389	Straight G sensor active check Brand	Chassis
Mitsubishi	C1389	Straight G sensor active check Brand	Chassis
Perodua	C1389	Tachometer signal abnormal Brand	Chassis
Peugeot	C1389	No description available	Chassis
Proton	C1389	Straight G sensor active check Brand	Chassis
Suzuki	C1389	No description available	Chassis
Toyota	C1389	Brake fluid level information failure Brand	Chassis

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.

5Related codes

Browse Cxxx codes or C138xx codes.