PowertrainP0039

Caution

Severity: Caution - get it checked when you can

Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance

27 brands affected · Generic SAE J2012 description.

Key terms: Turbocharger: an exhaust-driven fan that pushes extra air into the engine · Supercharger: an engine-driven fan that pushes extra air into the engine · Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

This code is in the fuel and air metering range, which includes fuel-pressure and camshaft-timing faults.

2Common causes

Dirty or faulty mass air flow sensor
Vacuum or intake air leak
Weak fuel pump or clogged fuel filter
Faulty fuel injector
Faulty oxygen sensor
Wiring or connector fault

3Can I drive?

Caution · drive with care

Have it diagnosed promptly. Some codes in this range affect fuel pressure or camshaft timing; if the engine loses power, runs badly, or stalls, stop safely and get professional help.

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 27

Brand	Code	Description	System
Ashok Leyland CV	P0039	Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance SAE	Powertrain
BAIC Motor	P0039	Boost relief valve signal implausible Brand	Powertrain
BYD	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
Chery	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
Daewoo	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
DFFS	P0039	Compressor pressure relief solenoid valve failure Brand	Powertrain
DFFX	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
DFXK	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
EOBD	P0039	Turbolader/kompressor bypass-ventil 'A' styrekreds område/ydeevne Brand	Powertrain
Geely	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
GM	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
Great Wall	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
Hafei	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
Holden	P0039	Turbocharger Bypass Solenoid Valve Control Circuit Brand	Powertrain
Honda	P0039	Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance SAE	Powertrain
Hyundai	P0039	Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance SAE	Powertrain
Land Rover	P0039	Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance SAE	Powertrain
Mitsubishi	P0039	Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance SAE	Powertrain
Nissan	P0039	Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance SAE	Powertrain
Opel	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
Peugeot	P0039	Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance SAE	Powertrain
Saab	P0039	Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
MG (SAIC)	P0039	Rear Right pretensioner Upper or lower Power Switch Failure Brand	Powertrain
Subaru	P0039	Turbocharger/Supercharger Bypass Valve A Control Circuit Range/Performance SAE	Powertrain
Suzuki	P0039	Turbocharger / Supercharger Bypass Valve Control Circuit Range / Performance Brand	Powertrain
Tata	P0039	Turbo/Super Charger Bypass Valve Control Circuit Range/Performance Brand	Powertrain
Toyota	P0039	Compressor pressure relief solenoid valve 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 P003xx codes.