Question about 2000 Cadillac DeVille

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Fix po410 problem

Where is the air pump located .

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The A.I.R. (secondary air) pump is located at the lower left side front of the car. You need to remove the car's front lower shield to get at it, and to the hoses and check valve connected to it.

Posted on Dec 08, 2014

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Code po410


P0410 - Secondary Air Injection System Malfunction
Possible causes- Faulty Vacuum hoses damaged
- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection
- Air bypass solenoid leaking/blocked or stuck open/closed
- Air diverter valve leaking/blocked or stuck open/closed

This is likely a pump problem caused by water being sucked into the secondary air injection pump under the hood.

Aug 29, 2012 | Chevrolet Cars & Trucks

1 Answer

Code 410


code po410 on a 2004 gmc envoy is that there is a problem with the secondary air injection system, you will need to check the fuse located in the engine compartment first, the next step is to start the truck cold and listen for the air pump to turn on for a few seconds, this will sound like a jet engine but not that loud, after it runs for 5 min and you dont hear it then you may have a bad pump which is located under the driverside on frame but if you hear the pump then you may have a bad valve, this valve is located on the exhaust manifold area and has a hose from the pump to valve, remove the hose and check for water, drain any water in the hose, also remove hose at pump and drain, the most common cause for this code is the valve is not opening and the air pump gets water inside and goes bad, thats the po410 code. a quick note; if fuse is blown look under truck near pump and check relay as it fills with water and blows fuse, if this is the case replace relay and blow water out of connector.good day.

Dec 06, 2011 | 2004 GMC Envoy

2 Answers

I have a 00 cadillac deville base. i have a po410 check engine code. i was wondering what is the usually fix for this


Code po410 secondary air ignition malfunction

Start up your car cold, if you don't hear a sound like a vacuum cleaner running under your car you probably need a new air pump.
First, check the maxi-fuse in the underhood fuse block for the AIR pump.
If it's blown then you need to get under the car on the driver's side.
Remove the front cover and look at the bottom cover on the air pump, if it's dislodged and full of water the pump probably sucked up some water and is no longer good. There is a bulletin out to replace the air pump and the intake duct with a redesigned part that is not so suceptible to water intrusion. Also it's possible that the connector is burnt up, I have seen some with new air pumps set codes because of a fried electrical connection.thank you and have a wonderful day

Aug 22, 2011 | 2000 Cadillac DeVille

1 Answer

Where is the emission relay located? air pump problems code PO410


Air pump is belt driven not fuses. It has a sensor not a relay. The code is fromthe sensor talking of a result of air pump output. Problem may have something causeing it to do that.

Jun 23, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

Engine light came on, code po410 came up.


This has to do with the secondary air pump system, this system is used at cold start-up and involves three components; air pump, solenoid valve and a relay. Many times the valve becomes stuck or clogged, the relay has also been known to fail.

May 11, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

The code po410 for the secondary air injection system is displayed. I check the pump and it is working fine. I can not locate the one way check valve to determine if it is working?


I believe the check valve is an internal component of the electric AIR shut-off valve. I assume this is a 4.2L as other engines do not have AIR.

Mar 03, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

Which sensor do I need to correct code po410


PO410. Secondary air pump code.

Check fuse for air pump. Blown.
Replaced the air pump if it's in Bad shape.
The air pump is only $100 (NAPA) Gotta be water in the air pump. Water gets in air pump...then rapid below freezing conditions the air pump freezes...blows fuse.....set air pump code.

There is a GM bulletin about a new intake tube for the air pump for exactly this problem. This new intake tube should save the air pump, get the new intake pipe/valve the same time you repair or replace the air pump if it's gone bad. Check the fuse first though, good luck.


Nov 08, 2009 | 2001 Cadillac DeVille

2 Answers

I have a 2004 buick rainier and i,m getting a code po410


P0410 Secondary Air Injection System Malfunction
I am very familiar with this failure code, you are going to have to replace the secondary air injection pump, it has a failed motor in it, the code really indicates no airflow from the pump when commanded to be on.

May 28, 2009 | 2004 Buick Rainier

1 Answer

Check engine light on pulled code po410


this is caused by a defective seconday air injection pump, replace the pump.

Apr 06, 2009 | 1999 Chevrolet K1500

2 Answers

Code PO410


there is a TSB re: PO410 code, it is your air pump, you need to replace pump and other items, hose, cover filter. You will not pass insp. You may cause damage to cat and inturn burn out your intake plenum if you don't fix it.. cheaper to fix right. recomend reman. pump, save you alot of $.

Jun 06, 2008 | 2002 Oldsmobile Intrigue

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