PowertrainP0045

Caution

Severity: Caution - get it checked when you can

Turbocharger/Supercharger Boost Control A Circuit/Open

39 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 · Boost pressure: extra air pressure made by a turbo or supercharger · 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 39

Brand	Code	Description	System
Ashok Leyland CV	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
BAIC Motor	P0045	Variable Geometry Turbo (VGT) drive circuit open Brand	Powertrain
Mercedes-Benz	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
BYD	P0045	Turbocharger/Supercharger Boost Control Solenoid A Circuit/Open Brand	Powertrain
Chery	P0045	VGT drive circuit fault Brand	Powertrain
Chrysler	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Daewoo	P0045	Select Motor Malfunction Brand	Powertrain
Daihatsu	P0045	VN turbo system Brand	Powertrain
DFFS	P0045	Sequential solenoid coil 6 output fault Brand	Powertrain
DFFX	P0045	Turbocharger/Supercharger Boost Control Solenoid A Circuit/Open Brand	Powertrain
DFXK	P0045	Booster circuit open Brand	Powertrain
EOBD	P0045	Turbolader/kompressor ladetryk kontrol 'A' kreds/åben Brand	Powertrain
Ford	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Geely	P0045	Turbocharger/Supercharger Boost Control Solenoid A Circuit/Open Brand	Powertrain
GM	P0045	Turbocharger boost control solenoid control circuit Brand	Powertrain
Great Wall	P0045	Booster drive circuit open Brand	Powertrain
Hafei	P0045	Turbocharger/Supercharger Boost Control Solenoid A Circuit/Open Brand	Powertrain
Holden	P0045	Turbocharger Boost Control Circuit Brand	Powertrain
Honda	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Hyundai	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Isuzu	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Land Rover	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Mahindra	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Maserati	P0045	Turbocharger Boost Control Circuit Open Brand	Powertrain
Mazda	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Mitsubishi	P0045	Boost control solenoid Brand	Powertrain
Opel	P0045	Turbocharger boost control solenoid control circuit Brand	Powertrain
Perodua	P0045	VN turbo system Brand	Powertrain
Peugeot	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Porsche	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Proton	P0045	Boost control solenoid Brand	Powertrain
Saab	P0045	Turbocharger boost control solenoid control circuit Brand	Powertrain
MG (SAIC)	P0045	Turbocharger/Supercharger Boost Control Solenoid A Circuit/Open Brand	Powertrain
Sprinter	P0045	Turbocharger/Supercharger Boost Control A Circuit/Open SAE	Powertrain
Subaru	P0045	improvement to misfire feeling while driving, and DTC U0122, and P2196 Brand	Powertrain
Suzuki	P0045	Turbocharger/Supercharger Boost Control Solenoid 'A' Circuit/Open Brand	Powertrain
Tata	P0045	Turbocharger/Supercharger Boost Control " Brand	Powertrain
Toyota	P0045	Sequential solenoid coil 6 output fault Brand	Powertrain
Volkswagen	P0045	Boost pressure control valve/solenoid (bank 1): 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 4

These 7-character codes are manufacturer-specific variants of P0045 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P004500	Turbocharger Boost Control Open Circuit Brand	Powertrain
Mercedes-Benz	P004514	Die Ladedruckregelklappe hat einen elektrischen Fehler oder Unterbrechung. Es liegt ein Kurzschluss nach Masse oder eine Unterbrechung vor. Brand	Powertrain
Mercedes-Benz	P00452B	Die Ladedruckregelklappe hat einen elektrischen Fehler oder Unterbrechung. Die elektrischen Leitungen haben Kurzschluss untereinander. Brand	Powertrain
Sprinter	P00452B	Die Ladedruckregelklappe hat einen elektrischen Fehler oder Unterbrechung. Die elektrischen Leitungen haben Kurzschluss untereinander. Brand	Powertrain

6Related codes

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