PowertrainP1806

Serious

Severity: Serious - have it checked soon

Brake vacuum sensor

24 brands affected · Description from Toyota data.

Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions

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

1What it means in plain English

The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.

2Common causes

Sensor or actuator fault
Wiring or connector fault
Vacuum or intake leak
Fuel or ignition problem
Control module fault

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 24

Brand	Code	Description	System
Mercedes-Benz	P1806	No description available	Powertrain
BMW	P1806	implausible signal or value Brand	Powertrain
Chery	P1806	Accelerator pedal signal 2 exceeds limit Brand	Powertrain
Daewoo	P1806	4WD High Indicator Short To Battery Brand	Powertrain
Daihatsu	P1806	E/G ECU communication input data abnormal Brand	Powertrain
DFFS	P1806	No description available	Powertrain
DFXK	P1806	Motor overcurrent fault: level 2 Brand	Powertrain
EOBD	P1806	Anduri toide 2 Brand	Powertrain
Geely	P1806	Hydraulic Actuator Position Sensor (G302): Lower limit not Reached Brand	Powertrain
GM	P1806	4WD High Indicator Short To Battery Brand	Powertrain
Holden	P1806	Transmission Range Selector Switch 7 Circuit Performance Brand	Powertrain
Land Rover	P1806	Four-wheel drive high ratio - short circuit to battery Brand	Powertrain
Mahindra	P1806	No description available	Powertrain
Mitsubishi	P1806	Brake signal error Brand	Powertrain
Opel	P1806	4WD High Indicator Short To Battery Brand	Powertrain
Perodua	P1806	E/G ECU communication input data abnormal Brand	Powertrain
Peugeot	P1806	No description available	Powertrain
Proton	P1806	Brake signal error Brand	Powertrain
Saab	P1806	4WD High Indicator Short To Battery Brand	Powertrain
MG (SAIC)	P1806	CAN Bus OFF Status/procedure text, not a fault description. Brand	Powertrain
Smart	P1806	No description available	Powertrain
Suzuki	P1806	BRAKE VACUUM SEN Brand	Powertrain
Tata	P1806	No description available	Powertrain
Toyota	P1806	Brake vacuum sensor Brand	Powertrain

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 P1806 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P180600	The control unit has a malfunction Brand	Powertrain
SsangYong	P180600	CAN: communication interruption(bus off) Brand	Powertrain

6Related codes

Browse Pxxx codes or P180xx codes.