Question about Chevrolet TrailBlazer

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2005 trailblazer LT..code po410 secondary air injection fault..Air pump does run at start up.sounds fine..all fuses and relays checked out ok..all hoses and fittings are fine..no other codes present..please help!!!

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If the pump is fine, there must be water in the system. Check the entire system for water build-up or replace the pump

Posted on Aug 04, 2010

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Where can I find the fuse and relay for air injector pump on a 2005 chevy trailblazer LS?


AIR SOL - fuse #54 15amp - AIR fuse #56 60amp location under hood fuse / relay box
54
AIR SOL Fuse
15A
AIR SOL Relay, Secondary Air Injection (AIR) Pump Relay, Secondary Air Injection (AIR) Pump, Secondary Air Injection (AIR) Solenoid
55
AIR SOL Relay
--
Secondary Air Injection (AIR) Solenoid

Sep 13, 2016 | 2005 Chevrolet TrailBlazer LS

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

1 Answer

I have a 05 chevy trailblazer, the check engine lite is on and a hand held analyzer indicated problem codes: PO410 $ PO128 any ideas? Wayne C


P0410

Definition
Secondary Air Injection System fault
Explanation
The air injection system is monitored for faults
Probable Causes
1) Circuit relay defective or fuse open
2) Check connector and wiring
3) AIR pump defective or hoses blocked


P0128
Fault Code Definition
  • Engine temperature has not increased and/or reached the correct level within a specified amount of time after engine startup
Common Problems That Trigger the P0128 Code
As for the po128 I would replace the thermostat first. That is the problem 99% of the time.

Good Luck

Jul 12, 2010 | Chevrolet Chevy Cars & Trucks

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

2000 GMC Sierra 3 door 5.3, tried to get smog - failed due to SES light, code PO410. any suggestions?


the secondary air injection pump system ..check for air pump fuse first. check your manual

Jan 26, 2010 | 2005 GMC Envoy

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

Po410 code on a chevy trailblazer


The secondary air injection comes from an electric air pump (replaces the old eng. driven smog pump), it seldom runs, but when the car is 1st started you should hear if for about one minute, kinda sounds like a muffled hair dryer. The most common issue is the hoses get knocked off, 2nd is the electric motor failing.

Aug 02, 2008 | 2004 Chevrolet TrailBlazer

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