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Old 05-26-2010, 07:23 AM   #1
Scooby Specialist
Member#: 136358
Join Date: Jan 2007
Chapter/Region: NESIC
Location: Newington, CT
2006 WRX Limited

Default Cel P0410

06 wrx with sti swap, stage 2 protuned. I am getting a CEL P0410 Secondary Air Injection. I cant clear it, it will stay off for a couple days and then come back. Also not sure if its related but recently been having trouble starting the car as well. So this is what will happen.

In morning turn key hear all electricals, fuel pump, etc but not like the engine is cranking and car won't start. Do it again and again and again and eventually it will start. Once it starts sometimes the CEL will come on sometimes it won't. Regardless once car is on no problems period. Car runs fine and no CEL will come on while driving period. So I will get to work then during lunch/breaks I will go on to try to turn on car again to see if it has same issue and nope works peferct the first time, multiple times and no CEL.

So not sure if the 2 problems are related or where to start looking now.
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Old 05-30-2010, 11:40 AM   #2
Scooby Newbie
Member#: 246931
Join Date: May 2010
Chapter/Region: TXIC
Location: De Queen
2006 Impreza WRX


The 4 first hand causes of the p0410 cel are in order as follows:

1. Air duct system fault
2. Open or short circuit condition
3. Poor electrical connection
4. Secondary air pump faulty (aka smog pump)

hope this helps. Good luck.
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Old 09-12-2010, 12:29 AM   #3
Scooby Newbie
Member#: 257166
Join Date: Sep 2010
Chapter/Region: W. Canada
Location: Edmonton, Alberta
2008 WRX
Rally Blue


I had this happen to me recently, only happened when I went to start the car when it was cold. I was poking around under the hood and it turns out the air pump had somehow come unplugged, you might wanna check all the connections to it.
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