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Code PO 410? 850 1996

posted by  Donny9396 on  Wed Oct 21 00:53 CST 2009
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last visit: Mon Sep 6 15:48 CST 2010
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G'Mornin all!, Monday, the dreaded check engine light came on, and after a scan at the local auto zone, the code PO 410 came up, possible causes Secondary air injection pump, blocked hoses, open circuit/fuse. I have noticed an occasional "spooling" sound( the best way to explain that is it's a high pitched sound that sounds like a motor of some sort winding down). I did bypass the a/c compressor using a 50" belt this past weekend,(tried the 49.5, could not get it on) theres not a lot of tensioner left, but the belt's not slipping, that I can tell, but I dont think that would have anything to do with it, would it? The car is running fine, The auto zone guys cleared the code, and it hasnt came on again, it runs fine, so far, Does anyone know what the heck a secondary air injection pump is and how to fix it? Thank You all! -DM








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    Code PO 410? 850 1996

    posted by  jablackburn on  Wed Oct 21 06:40 CST 2009
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    last visit: Thu Jan 20 10:56 CST 2011
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    Check this out; there are several links in this topic too:
    http://www.matthewsvolvosite.com/forums/viewtopic.php?f=1&t=19621

    The air pump basically helps the car produce lower emissions until the engine warms up. Mine sounded like a high-pitched leafblower when it went too. Seems like an unnecessary and EXPENSIVE thing to fix to me. If you don't want to fix it right away, it doesn't affect how the car runs at all; just keep clearing the code. I dealt with it for 3 months before I replaced it out of annoyance.








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      Code PO 410? 850 1996

      posted by  volvocrazed on  Wed Oct 21 07:02 CST 2009
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      last visit: Thu Jul 28 18:15 CST 2011
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      I second jablackburn's advice: Clear code, ignore.

      That's what I've been doing for 6 years now (after paying thru the nose for a "repair" - this is the reason I bought a scanner). My pump does come on at cold start for a couple minutes as it is supposed to. But every once in a while, it throws the PO410 code. Sometimes two months go by between codes, sometimes two days, with no rhyme or reason that I've been able to discern.
      --
      '97 850 n/a Wagon, 170K mi ... '98 V70R AWD 115K mi







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