PowertrainP0404

Caution

Severity: Caution - get it checked when you can

Exhaust Gas Recirculation Circuit Range/Performance

39 brands affected · Generic SAE J2012 description.

Key terms: Catalytic converter: cleans the exhaust gases · EGR: exhaust gas recirculation, which cuts harmful gases · EVAP: the system that traps fuel vapour · Oxygen sensor: measures oxygen in the exhaust gas · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

This range covers emissions control (EGR, EVAP, oxygen sensors and the catalytic converter), but some manufacturers also use P04 codes for oil-pressure, brake-fluid and coolant-level warnings.

2Common causes

Clogged or faulty EGR valve
EVAP system leak (hoses, canister, fuel cap)
Faulty oxygen sensor
Ageing catalytic converter
Low oil, brake fluid or coolant (on some models)
Wiring or connector fault

3Can I drive?

Caution · drive with care

Do not assume this code is safe to drive. Check the description: if it names oil pressure, brake fluid, coolant, or a brake fault, stop safely and have it diagnosed before driving. Emissions-only codes (EGR, EVAP, catalyst) should still be checked before an emissions or roadworthiness inspection.

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	P0404	A/C System (Air Conditioning). Electric Compressor. Current Too High Brand	Powertrain
BAIC Motor	P0404	Exhaust Gas Recirculation Control Circuit Range/Performance Brand	Powertrain
BMW	P0404	Exhaust Gas Recirculation Control Circuit Range/Perf Brand	Powertrain
BYD	P0404	EGR control valve stuck Brand	Powertrain
Chery	P0404	EGR System Offset Brand	Powertrain
Chrysler	P0404	Implausible Data Received From ESM Brand	Powertrain
Daewoo	P0404	EGR flow too large Brand	Powertrain
DFFS	P0404	Oil temperature sensor failure Brand	Powertrain
DFFX	P0404	EGR control valve stuck Brand	Powertrain
DFXK	P0404	EGR valve short time drift fault Brand	Powertrain
EOBD	P0404	EGR 'A'-styrkretsområde/prestanda Brand	Powertrain
Fiat	P0404	Implausible data received from ESM Brand	Powertrain
Ford	P0404	DTC is replaced by DTCs P0489 and P0490 Brand	Powertrain
Geely	P0404	EGR System Offset Brand	Powertrain
GM	P0404	Exhaust Gas Recirculation(EGR) Open Position Performance Brand	Powertrain
Great Wall	P0404	EGR System Offset Brand	Powertrain
Hafei	P0404	EGR control valve stuck Brand	Powertrain
Holden	P0404	Exhaust Gas Recirculation (EGR) Control Circuit Brand	Powertrain
Honda	P0404	Exhaust Gas Recirculation Circuit Range/Performance SAE	Powertrain
Hyundai	P0404	Exhaust Gas Recirculation Circuit Range/Performance SAE	Powertrain
Isuzu	P0404	Exhaust Gas Recirculation Circuit Range/Performance SAE	Powertrain
Land Rover	P0404	Exhaust Gas Recirculation Circuit Range/Performance SAE	Powertrain
Mahindra	P0404	Exhaust Gas Recirculation Circuit Range/Performance SAE	Powertrain
Maserati	P0404	Exhaust Gas Recirculation (EGR) Control Circuit Performance Brand	Powertrain
Mazda	P0404	DTC is replaced by DTCs P0489 and P0490 Brand	Powertrain
Mitsubishi	P0404	EGR control valve stuck Brand	Powertrain
Nissan	P0404	Exhaust Gas Recirculation Circuit Range/Performance SAE	Powertrain
Opel	P0404	Exhaust Gas Recirculation(EGR) Open Position Performance Brand	Powertrain
Peugeot	P0404	Exhaust Gas Recirculation Circuit Range/Performance SAE	Powertrain
Proton	P0404	EGR System Offset Brand	Powertrain
Saab	P0404	Abgasrückführung (EGR) Offene Position Leistung Brand	Powertrain
MG (SAIC)	P0404	Rear Right pretensioner Leakage to plus on squib Brand	Powertrain
SsangYong	P0404	When a (77) Exhaust Gas Recirculation (EGR) valve control range is exceeded Brand	Powertrain
Subaru	P0404	Exhaust Gas Recirculation Circuit Range/Performance SAE	Powertrain
Suzuki	P0404	Exhaust Gas Recirculation 'A' Control Circuit Range / Performance Brand	Powertrain
SWM Motor	P0404	Exhaust gas recirculation (EGR) opening error large Brand	Powertrain
Tata	P0404	Needle Fouling Brand	Powertrain
Toyota	P0404	Oil temperature sensor failure Brand	Powertrain
Volkswagen	P0404	EGR system: 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 9

These 7-character codes are manufacturer-specific variants of P0404 and may be reported by some scan tools.

Brand	Code	Description	System
Hyundai	P040400	If stuck open/closed on E-EGR actuator is continued under driving condition, ECM sets DTC Brand	Powertrain
Mercedes-Benz	P040401	Die Ansteuerung für Abgasrückführsteller (Zylinderreihe 1) hat Funktionsstörung.Es liegt ein allgemeiner elektrischer Fehler vor. Brand	Powertrain
Mercedes-Benz	P040416	Die Ansteuerung für Abgasrückführsteller 'A' hat Funktionsstörung. Spannungsgrenzwert ist unterschritten. Brand	Powertrain
Mercedes-Benz	P040419	Die Ansteuerung für Abgasrückführsteller 'A' hat Funktionsstörung. Stromgrenzwert ist überschritten. Brand	Powertrain
Mercedes-Benz	P040464	Die Ansteuerung für Abgasrückführsteller (Zylinderreihe 1) hat Funktionsstörung. Es liegt ein unplausibles Signal vor. Brand	Powertrain
Mercedes-Benz	P040477	Die Ansteuerung für Abgasrückführsteller (Zylinderreihe 1) hat Funktionsstörung. Befohlene Position nicht erreichbar Brand	Powertrain
Mercedes-Benz	P040478	Die Ansteuerung für Abgasrückführsteller 'A' hat Funktionsstörung. Die Anpassung oder Justierung ist nicht korrekt. Brand	Powertrain
Mercedes-Benz	P0404FD	EGRVlvYErr: Abgasrückführsteller Diagnosemassetastung Fehler Y Brand	Powertrain
Sprinter	P0404FD	EGRVlvYErr: Abgasrückführsteller Diagnosemassetastung Fehler Y Brand	Powertrain

6Related codes

Browse Pxxx codes or P040xx codes.