PowertrainP203A

Caution

Severity: Caution - get it checked when you can

Reductant Level Sensor A Circuit

29 brands affected · Generic SAE J2012 description.

Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · 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 29

Brand	Code	Description	System
Ashok Leyland CV	P203A	Wheel Speed Sensor. Rear Axle Brand	Powertrain
BAIC Motor	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Mercedes-Benz	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
BYD	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Chery	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Daewoo	P203A	Reductant Level Sensor Circuit Brand	Powertrain
DFFS	P203A	Reductant Level Sensor Circuit Brand	Powertrain
DFFX	P203A	Reductant Level Sensor Circuit Brand	Powertrain
DFXK	P203A	Reductant Level Sensor Circuit Brand	Powertrain
EOBD	P203A	Litar penderia aras reductant 'A' Brand	Powertrain
Geely	P203A	Reductant Level Sensor Circuit Brand	Powertrain
GM	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Great Wall	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Hafei	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Holden	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Hyundai	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
Isuzu	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
Land Rover	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
Maserati	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Mitsubishi	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
Opel	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Peugeot	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
Saab	P203A	Reductant Level Sensor Circuit Brand	Powertrain
MG (SAIC)	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Smart	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
Sprinter	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
Tata	P203A	Reductant Level Sensor A Circuit SAE	Powertrain
Toyota	P203A	Reductant Level Sensor Circuit Brand	Powertrain
Volkswagen	P203A	Reductant level sensor: electrical malfunction; Mechanical 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.

5Extended variant codes 4

These 7-character codes are manufacturer-specific variants of P203A and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P203A08	Fuel tank level: see tank level sensor Brand	Powertrain
SsangYong	P203A0B	AdBlue/DEF level sensor voltage low Brand	Powertrain
SsangYong	P203A12	AdBlue/DEF level sensor voltage high Brand	Powertrain
SsangYong	P203A1C	AdBlue/DEF level sensor supply voltage error Brand	Powertrain

6Related codes

Browse Pxxx codes or P203xx codes.