PowertrainP191F

Serious

Severity: Serious - have it checked soon

Pressure sensor for brake booster: electrical malfunction; Mechanical failure

11 brands affected · Description from Volkswagen data.

Key terms: Boost pressure: extra air pressure made by a turbo or supercharger · 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 11

Brand	Code	Description	System
Daewoo	P191F	No description available	Powertrain
DFXK	P191F	Cell voltage sensor fault Brand	Powertrain
EOBD	P191F	Piduri võimendi rõhuandur Brand	Powertrain
GM	P191F	No description available	Powertrain
Holden	P191F	No description available	Powertrain
Mahindra	P191F	No description available	Powertrain
Opel	P191F	No description available	Powertrain
Peugeot	P191F	No description available	Powertrain
Saab	P191F	No description available	Powertrain
Tata	P191F	No description available	Powertrain
Volkswagen	P191F	Pressure sensor for brake booster: electrical malfunction; Mechanical failure 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 P191xx codes.