PowertrainP1803

Caution

Severity: Caution - get it checked when you can

Short circuit to negative

24 brands affected · Description from BMW 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 24

Brand	Code	Description	System
Ashok Leyland CV	P1803	No description available	Powertrain
BAIC Motor	P1803	Motor high-voltage input end voltage too low Brand	Powertrain
BMW	P1803	Short circuit to negative Brand	Powertrain
Chery	P1803	Accelerator pedal signal 1 stuck Brand	Powertrain
Daewoo	P1803	Transmission Clutch Interlock Safety Switch Short Circuit To Ground Brand	Powertrain
DFXK	P1803	Motor overtemperature fault: level 2 Brand	Powertrain
EOBD	P1803	Atmosfärtryckssensor Brand	Powertrain
Ford	P1803	No description available	Powertrain
Geely	P1803	Planetary Overdrive Low Range -- Mechanical Malfunction Brand	Powertrain
GM	P1803	Transmission Clutch Interlock Safety Switch Short Circuit To Ground Brand	Powertrain
Holden	P1803	Transmission Range Selector Switch 7 Circuit High Voltage Brand	Powertrain
Hyundai	P1803	No description available	Powertrain
Isuzu	P1803	No description available	Powertrain
Land Rover	P1803	Voltage below 10.5V or under set value for more than 19s Brand	Powertrain
Mahindra	P1803	No description available	Powertrain
Mazda	P1803	No description available	Powertrain
Mitsubishi	P1803	Shift lever CAN/LIN timeout Brand	Powertrain
Opel	P1803	Transmission Clutch Interlock Safety Switch Short Circuit To Ground Brand	Powertrain
Peugeot	P1803	No description available	Powertrain
Proton	P1803	Shift lever CAN/LIN timeout Brand	Powertrain
Saab	P1803	Transmission Clutch Interlock Safety Switch Short Circuit To Ground Brand	Powertrain
Smart	P1803	No description available	Powertrain
Suzuki	P1803	CONTROL UNIT 2 Brand	Powertrain
Tata	P1803	No description available	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 2

These 7-character codes are manufacturer-specific variants of P1803 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P180300	Das Absperrventil des Kühlmittels der Hochvoltbatterie schließt nicht. Brand	Powertrain
SsangYong	P180300	Solenoid short circuit to ground Brand	Powertrain

6Related codes

Browse Pxxx codes or P180xx codes.