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Engine light on with error code, EFI 442 EFI 448 and EFI 446 S70 1998

posted by  richmond5 on  Mon Mar 14 11:43 CST 2005
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    Engine light on with error code, EFI 442 EFI 448 and EFI 446 S70 1998

    posted by  mcmahonm on  Fri Mar 18 02:01 CST 2005
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    A common cause for the "P" code 442 is a faulty secondary air system (SAS) valve. The valve itself is a common failure. You can physically test it by jumping the air pump relay and grounding the solenoid to activate the vacuum to the valve. This may be a bit too technical, so try to trouble shoot the problem by using a small hand held vacuum pump.

    Please take a look at:http://www.volvospeed.com/Repair/airpump1.htm

    The web author has covered most of the common failures that plague the "slow leak" P codes. Good Luck!
    Cheers!







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    Engine light on with error code, EFI 442 EFI 448 and EFI 446 S70 1998

    posted by  KlausC on  Mon Mar 14 14:58 CST 2005
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    last visit: Fri Oct 24 10:15 CST 2014
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    442 is air pump relay signal missing. 446&448 are not documented? Check the airpump connectors, clean them. Also check to see if the airpump is working at all after cold engine start.

    Klaus
    --
    98 V70Rawd(101Kmi), 95 854T(85K mi), 75 164E(173K mi)







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