PowertrainP0405

Caution

Severity: Caution - get it checked when you can

Exhaust Gas Recirculation Sensor A Circuit Low

41 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 41

Brand	Code	Description	System
Ashok Leyland CV	P0405	Malfunction In The Gearshift Solenoid 1 To 4 (Skip Shift) Control Circuit Brand	Powertrain
BAIC Motor	P0405	EGR valve position sensor voltage low Brand	Powertrain
Mercedes-Benz	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
BMW	P0405	Exhaust Gas Recirculation Sensor A Circuit Low Brand	Powertrain
BYD	P0405	EGR lift sensor circuit low Brand	Powertrain
Chery	P0405	EGR lift sensor circuit low Brand	Powertrain
Daewoo	P0405	Exhaust gas recirculation 'A' circuit low Brand	Powertrain
Daihatsu	P0405	EGR lift sensor system Brand	Powertrain
DFFS	P0405	EGR position Brand	Powertrain
DFFX	P0405	EGR lift sensor circuit low Brand	Powertrain
DFXK	P0405	EGR Temp Sensor (G98): Signal too Low Brand	Powertrain
EOBD	P0405	EGR-sensor 'A' krets lav Brand	Powertrain
Ford	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Geely	P0405	EGR lift sensor circuit low Brand	Powertrain
GM	P0405	Exhaust Gas Recirculation Sensor A Circuit Low Brand	Powertrain
Great Wall	P0405	EGR lift sensor circuit low Brand	Powertrain
Hafei	P0405	EGR lift sensor circuit low Brand	Powertrain
Holden	P0405	Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage Brand	Powertrain
Honda	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Hyundai	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Isuzu	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Land Rover	P0405	If is also set Brand	Powertrain
Mahindra	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Maserati	P0405	Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Brand	Powertrain
Mazda	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Mitsubishi	P0405	EGR position sensor low Brand	Powertrain
Nissan	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Opel	P0405	Exhaust Gas Recirculation Sensor A Circuit Low Brand	Powertrain
Perodua	P0405	EGR lift sensor system Brand	Powertrain
Peugeot	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Porsche	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Proton	P0405	EGR position sensor low Brand	Powertrain
Saab	P0405	Exhaust Gas Recirculation Sensor A Circuit Low Brand	Powertrain
MG (SAIC)	P0405	EGR Sensor A Circuit Low Brand	Powertrain
Subaru	P0405	Exhaust Gas Recirculation Sensor A Circuit Low SAE	Powertrain
Suzuki	P0405	Exhaust Gas Recirculation Sensor 'A' Circuit Low Brand	Powertrain
SWM Motor	P0405	Exhaust gas recirculation (EGR) position sensor low voltage fault Brand	Powertrain
Tata	P0405	P-EGR Position Feedback-Low Brand	Powertrain
Toyota	P0405	EGR position Brand	Powertrain
Volvo	P0405	Differential Pressure Feedback EGR Circuit Low Brand	Powertrain
Volkswagen	P0405	EGR temp sensor (G98): signal too low 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 8

These 7-character codes are manufacturer-specific variants of P0405 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P040500	No description available	Powertrain
Hyundai	P040500	is set when feed back EGR valve position out of high limit position for 0.1second. In this case, check that stuck of EEGR actuator, air leakage of intake line Brand	Powertrain
Sprinter	P040500	No description available	Powertrain
SsangYong	P040500	High pressure Exhaust Gas Recirculation (EGR) valve position signal circuit short to ground Brand	Powertrain
Mercedes-Benz	P040511	No description available	Powertrain
Sprinter	P040511	No description available	Powertrain
Mercedes-Benz	P04051C	No description available	Powertrain
Sprinter	P04051C	No description available	Powertrain

6Related codes

Browse Pxxx codes or P040xx codes.