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1997 Mercury Sable Question: P0411 and error code,can't locate diverter valves to check them.

 

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TRads1, 3.0L V6, Allentown, PA, July 25, 2013, 14:29
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Also P0420 code

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  • Answer #1

    July 26, 2013, 06:29
     Journeyman

    p0411 is for secondary air pump. air pump located between radiator and transmission. diverter valve located under intake tube between air filter and throttle body. p0420 is for catalytic converter bank 1 which is the rear converter.

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