PowertrainP0411

Caution

Severity: Caution - get it checked when you can

AIR System A Incorrect Flow Detected

38 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 38

Brand	Code	Description	System
Ashok Leyland CV	P0411	Engine ECU. PCM (Powertrain Control Module). Input Signals Error Brand	Powertrain
BAIC Motor	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
Mercedes-Benz	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
BMW	P0411	Secondary-air pump not active Brand	Powertrain
BYD	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
Chery	P0411	SLS Secondary Air System Flow Detection Fault Brand	Powertrain
Daewoo	P0411	Secondary Air Pump Incorrect Flow Brand	Powertrain
Daihatsu	P0411	Secondary air injection system incorrect flow detected Brand	Powertrain
DFFS	P0411	Left door open switch circuit (CPO) fault Brand	Powertrain
DFFX	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
DFXK	P0411	SLS Secondary Air System Flow Detection Fault Brand	Powertrain
EOBD	P0411	Neteisingas oro sistemos 'A' srautas Brand	Powertrain
Ford	P0411	Diagnostic Trouble Code Brand	Powertrain
Geely	P0411	SLS 2nd air system flow inspection malf Brand	Powertrain
GM	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
Great Wall	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
Hafei	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
Holden	P0411	Secondary Air Injection System Incorrect Air Flow Detected Brand	Powertrain
Honda	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Hyundai	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Isuzu	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Land Rover	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Maserati	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Mazda	P0411	Diagnostic Trouble Code Brand	Powertrain
Mitsubishi	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Opel	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
Perodua	P0411	Secondary air injection system incorrect flow detected Brand	Powertrain
Peugeot	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Porsche	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Proton	P0411	Secondary Air Injection System Incorrect Flow Malfunction Brand	Powertrain
Saab	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
MG (SAIC)	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
Sprinter	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Subaru	P0411	Sec. Air Flow Abnormal Brand	Powertrain
Suzuki	P0411	AIR System A Incorrect Flow Detected SAE	Powertrain
Tata	P0411	Secondary Air Injection System Incorrect Flow Detected Brand	Powertrain
Toyota	P0411	Left door open switch circuit (CPO) fault Brand	Powertrain
Volkswagen	P0411	Secondary Air Injection System: Incorrect Flow Detected 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 P0411 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P041100	Defective secondary air pump - insufficient air volume Brand	Powertrain

6Related codes

Browse Pxxx codes or P041xx codes.