PowertrainP2203

Caution

Severity: Caution - get it checked when you can

NOx Sensor Circuit High (Bank 1 Sensor 1)

31 brands affected · Generic SAE J2012 description.

Key terms: Control module: a small computer that runs one part of the car · Bank 1: the side of the engine containing cylinder 1 · 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 31

Brand	Code	Description	System
Ashok Leyland CV	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
BAIC Motor	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
Mercedes-Benz	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
BYD	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
Chery	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
Daewoo	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
DFFS	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
DFFX	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
DFXK	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
EOBD	P2203	NOx-sensorkrets hög bank 1 sensor 1 Brand	Powertrain
Ford	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
Geely	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
GM	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
Great Wall	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
Hafei	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
Holden	P2203	NOx Sensor 1 Circuit High Voltage Brand	Powertrain
Hyundai	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
Isuzu	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
Land Rover	P2203	Nitrous oxide sensor - circuit high. Bank 1 Brand	Powertrain
Maserati	P2203	NOx Sensor 1 Circuit High Brand	Powertrain
Mitsubishi	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
Opel	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
Peugeot	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
Saab	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
MG (SAIC)	P2203	NOx Sensor Circuit High Bank 1 Brand	Powertrain
Smart	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
Sprinter	P2203	NOx Sensor Circuit High (Bank 1 Sensor 1) SAE	Powertrain
Suzuki	P2203	DFC of Nox signal range check of Nox sensor (maximum) Brand	Powertrain
Tata	P2203	Nox Sensor Circuit High Input Bank 1 Brand	Powertrain
Toyota	P2203	Output voltage is higher than 16 volts Brand	Powertrain
Volkswagen	P2203	NOx sensor 1 bank 1: signal too high 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 1

These 7-character codes are manufacturer-specific variants of P2203 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P220300	Faulty speed sensor N3 signal Brand	Powertrain

6Related codes

Browse Pxxx codes or P220xx codes.