PowertrainP1548

Caution

Severity: Caution - get it checked when you can

Boost pressure control valve open

16 brands affected · Description from Toyota 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

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?

Caution · drive with care

Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.

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 16

Brand	Code	Description	System
Chery	P1548	Boost Pressure Regulation Valve (N75): Open Circuit Brand	Powertrain
Daewoo	P1548	A/C Recirculation Circuit Brand	Powertrain
Daihatsu	P1548	Engine start system fault Brand	Powertrain
DFXK	P1548	Boost Pressure Regulation Valve (N75): Open Circuit Brand	Powertrain
EOBD	P1548	A/C-Umluftkreislauf Brand	Powertrain
Geely	P1548	Boost Pressure Regulation Valve (N75): Open Circuit Brand	Powertrain
GM	P1548	Circuit recyclage clim Brand	Powertrain
Isuzu	P1548	No description available	Powertrain
Land Rover	P1548	Engine Air Filter Restriction Brand	Powertrain
Perodua	P1548	Engine start system fault Brand	Powertrain
Peugeot	P1548	No description available	Powertrain
Porsche	P1548	No description available	Powertrain
Saab	P1548	Circuit recyclage clim Brand	Powertrain
Tata	P1548	No description available	Powertrain
Toyota	P1548	Boost pressure control valve open Brand	Powertrain
Volkswagen	P1548	Boost Pressure Controle Valve (N75): Open Circuit 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 1

These 7-character codes are manufacturer-specific variants of P1548 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P154800	There is a warning due to a detected insulation fault. Brand	Powertrain

6Related codes

Browse Pxxx codes or P154xx codes.