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OBDII says secondary air injection system. What is secondary air injection system

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This is a pump that pushes air into the exhaust manifold of your car. Typically when this code occurs the one way valve which prevents water from going back into pump has failed. You can usually just replace the valve to fix this problem.

Posted on Mar 15, 2011

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Posted on Jan 02, 2017

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My 2008 Trailblazer has OBD-II code P2430. How do I replace the secondary air injection pump?


This code doesn't mean to replace the air pump ,
DTC P2430 : Secondary Air Injection (AIR) System Pressure Sensor Circuit
Circuit/System Description
The secondary air injection (AIR) system aids in the reduction of hydrocarbon emissions during a cold start. The system forces fresh filtered air into the exhaust stream in order to accelerate the catalyst operation. An electric air pump, the secondary AIR injection pump, provides filtered air on demand to the AIR control solenoid valve/pressure sensor assembly. The AIR control solenoid valve/pressure sensor assembly controls the flow of air from the AIR pump to the exhaust manifold. The AIR solenoid relay supplies the current needed to operate the AIR control solenoid valve/pressure sensor assembly. A pressure sensor is used to monitor the air flow from the AIR pump. The engine control module (ECM) supplies the internal pressure sensor with a 5-volt reference, an electrical ground, and a signal circuit.
This is a pressure sensor problem . What this video on testing !
Chevrolet Malibu P2432 Secondary Air Injection System

May 11, 2017 | Cars & Trucks

2 Answers

What is OBD code po4 18 on a 2004 Cadillac deville


P0418 Secondary Air Injection System Relay "A" Circuit Malfunction

Read more at: http://www.obd-codes.com/trouble_codes/
Copyright © OBD-Codes.com

May 22, 2015 | 2004 Cadillac Deville

1 Answer

Mercedes Benz R 350, 2008 error P0411


Error Code: P0411
Description:
Secondary Air Injection (AIR) System - Incorrect Flow Detected
Indication:
Malfunction Indicator Lamp (MIL) ON.
Reasons:
Secondary air injection (AIR) pump.
Secondary air injection (AIR) valve.
Secondary air injection (AIR) hose(s).

Feb 21, 2014 | 2007 Mercedes-Benz C230 Sedan

1 Answer

I replaced my secondary air check valve on my 2001 chevy tahoe but code 1416 still comes up. what else can i check


here is what i found on p1416.



P1416 Chevrolet
P1416 Chevrolet - Secondary Air Injection System Bank 2
Possible causes
- Faulty Secondary Air Injection (AIR) pump
- Secondary Air Injection check valve bank 2
- Secondary Air Injection (AIR) pump electrical circuit fault
- Blocked Secondary Air Injection (AIR) system

When is the code detected?

The P1416 code is set when no O2 sensor voltage change is detected by the Engine Control Module (ECM).


Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)


P1416 Chevrolet Description
An Secondary Air Injection (AIR) pump is used on this vehicle to lower tail pipe emissions on start-up. The PCM supplies a ground to the AIR pump relay, which energizes the AIR pump. The Powertrain Control Module (PCM) monitors the HO2S voltages to diagnose the AIR system. During the AIR test the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages and short term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low and the short term fuel trim should go high.

Jan 23, 2014 | 2001 Chevrolet Tahoe

1 Answer

Code po 491 and po 492


P0491 Secondary Air Injection System (Bank 1)
P0492 Secondary Air Injection System (Bank 2)
Good luck for you!
OBD2 code reader

Jun 25, 2013 | 2001 BMW 330

1 Answer

How to clean secondary air injection incorrect upstream flow detected Code PO411


The valve may need to be replaced. Only air flows thru the components.

Jul 03, 2012 | 2008 Chevrolet TrailBlazer LT

1 Answer

I have a 2000 vw passat GLX V6 5 Speed with the error codes p1411 -p1423 how do i fix it


P1411 = Secondary air injection system, bank 2 - insufficient flow detected.
Probable cause: Intake leak, hose(s) blocked / leaking, secondary air system valve / solenoid.

P1423 = Secondary air injection system, bank 1 - insufficient flow detected.
Probable cause: Intake leak, hose(s) blocked / leaking, secondary air system valve / solenoid.


Mar 13, 2011 | 2000 Volkswagen Passat 4Motion

1 Answer

What is p 2447 air inject system pump


DESCRIPTION

The Secondary Air injection (AIR) system consists of an air pump, the Air Switching Valve (ASV), a pressure sensor, the Air Injection Control Driver (AID) and the ECM. For a short time after cold engine starts, the AIR system pumps secondary air to the exhaust port of the cylinder head to purify the exhaust emissions. The secondary air is supplied by the air pump and is pumped to the exhaust port through the ASV.
The AID drives the ASV and the air pump according to command signals transmitted by the ECM. The pressure sensor detects the pressure in the secondary air passage when the AIR system is ON and OFF, and transmits a pressure signal to the ECM.
The AID is not only equipped to drive the pump and valve, but also with a diagnosis function to detect malfunctions in the AIR system circuit.

Nov 21, 2010 | 2008 Toyota Tundra

2 Answers

Obd code of p0411 on a 1999 ford mustang 3.8 v-6 what do I check to correct


That's s failure of the secondary air pump. It'll have to be changed. It's an emissions component meant to help with cold start emissions. It won't cause engine running trouble but at inspection time you'll fail for smog. Change it before then and you'll be fine.

May 16, 2010 | 1999 Ford Mustang Cobra

1 Answer

I have a code P0491 coming up on my 2004 Dodge Stratis, this is a secondary fuel injection system and don't know wear to start to correct this.


P0491 Secondary Air Injection System (Bank 1)
This code is not fuel injection but air injection, replace the secondary air injection pump.

Apr 20, 2009 | 2004 Dodge Stratus

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