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post #1 of 8 (permalink) Old 12-14-2012, 06:57 AM Thread Starter
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Check Eng. Code P0411

code came and I didn't know cars still had an air pump ... any thoughts ..thanks
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post #2 of 8 (permalink) Old 12-14-2012, 07:17 AM
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Yes depending on year and state.

P0411 Secondary Air Injection System Incorrect Flow Detected

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post #3 of 8 (permalink) Old 12-14-2012, 07:22 AM
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Check the fuse first


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post #4 of 8 (permalink) Old 12-14-2012, 01:28 PM Thread Starter
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code

2007 mass , but came from a dealer in conn... where might I locate the fuse ??? again thanks .........
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post #5 of 8 (permalink) Old 12-14-2012, 02:22 PM
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Underhood fuse block. But that's a 40A fuse. Don't think it will be the fuse though you would get a different code. Might be the pump clutch or a split hose from pump to exhaust manifold. My bet on the latter. Reset the code and see if it comes back.

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post #6 of 8 (permalink) Old 12-14-2012, 06:06 PM Thread Starter
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code

did that .. reset the code and by the end of the day light was back on ...
again thanks
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post #7 of 8 (permalink) Old 01-15-2013, 06:10 PM Thread Starter
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air pump

replaced the air pump and low and behold within hours the check eng. light was back on ( same code ) .. reset and still came back on .. with test equiptment we could get the air pump to work when connected to DLC .... checked all hoses for cracks and looseness , all good .. thanks again .
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post #8 of 8 (permalink) Old 01-15-2013, 07:41 PM
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Check valve is next, not holding pressure.


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