PowertrainP05B9

Caution

Severity: Caution - get it checked when you can

Restraint deployment signal circuit low

5 brands affected · Description from Toyota data.

Key terms: Powertrain: engine, transmission and emissions

Safety: This code relates to the airbag or seat-belt restraint system. An airbag may not deploy in a crash.

1What it means in plain English

This range covers vehicle speed, idle and oil-pressure control, charging-system voltage, and brake-switch circuits.

2Common causes

Carbon build-up in the throttle body
Faulty idle air control valve
Faulty vehicle speed sensor
Faulty charging system or weak battery
Wiring or connector fault

3Can I drive?

Caution · drive with care

The airbag may not deploy in a crash. Have it checked by a qualified technician; do not work on airbag wiring yourself.

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 5

Brand	Code	Description	System
Ashok Leyland CV	P05B9	No description available	Powertrain
EOBD	P05B9	Sikkerhetsbelteutløsersignalkrets lav Brand	Powertrain
Isuzu	P05B9	No description available	Powertrain
Land Rover	P05B9	Restraint Deployment Signal Circuit Low Brand	Powertrain
Toyota	P05B9	Restraint deployment signal circuit low 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.

5Related codes

Browse Pxxx codes or P05Bxx codes.