PowertrainP0A40

Caution

Severity: Caution - get it checked when you can

Drive Motor A Position Sensor Circuit Range/Performance

31 brands affected · Description from Toyota data.

Key terms: 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 31

Brand	Code	Description	System
Ashok Leyland CV	P0A40	Cylinder 12. INJECTORS - Injector 2. Air/Fuel Ratio. Imbalance Brand	Powertrain
BAIC Motor	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
Mercedes-Benz	P0A40	No description available	Powertrain
BYD	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
Chery	P0A40	Motor temperature sensor 1 fault Brand	Powertrain
Daewoo	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
DFFS	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
DFFX	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
DFXK	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
EOBD	P0A40	Drivmotor 'A' lägesgivarkrets, område/prestanda Brand	Powertrain
Ford	P0A40	No description available	Powertrain
Geely	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
GM	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
Great Wall	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
Hafei	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
Holden	P0A40	Drive Motor Position Sensor Performance Brand	Powertrain
Honda	P0A40	No description available	Powertrain
Hyundai	P0A40	No description available	Powertrain
Isuzu	P0A40	No description available	Powertrain
Land Rover	P0A40	No description available	Powertrain
Maserati	P0A40	No description available	Powertrain
Mazda	P0A40	No description available	Powertrain
Opel	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
Peugeot	P0A40	No description available	Powertrain
Porsche	P0A40	Loss of position tracking detection Brand	Powertrain
Proton	P0A40	No description available	Powertrain
Saab	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
MG (SAIC)	P0A40	Drive Motor A Position Sensor Circuit Range/Performance Brand	Powertrain
Subaru	P0A40	No description available	Powertrain
Tata	P0A40	No description available	Powertrain
Toyota	P0A40	Drive Motor A Position Sensor Circuit Range/Performance 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 6

These 7-character codes are manufacturer-specific variants of P0A40 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P0A4029	The position sensor 'Electrical Machine A' has a malfunction. There is an invalid signal. Brand	Powertrain
Mercedes-Benz	P0A404B	The position sensor 'Electrical Machine A' has a malfunction. There is a fault due to overtemperature. Brand	Powertrain
Mercedes-Benz	P0A4062	Der Positionssensor 'Elektrische Maschine A' hat Funktionsstörung. Der Signalvergleich ist fehlerhaft. Brand	Powertrain
Mercedes-Benz	P0A4064	The position sensor 'Electrical Machine A' has a malfunction. There is an implausible signal. Brand	Powertrain
Mercedes-Benz	P0A40FA	Der Positionssensor 'Elektrische Maschine A' hat Funktionsstörung. Brand	Powertrain
Mercedes-Benz	P0A40FB	Der Positionssensor 'Elektrische Maschine A' hat Funktionsstörung. Brand	Powertrain

6Related codes

Browse Pxxx codes or P0A4xx codes.