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post #1 of 3 (permalink) Old 07-18-13, 05:31 AM Thread Starter
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check engine light

I am showing codes PO410 and PO491. I have read problems with secondary air pump. Any ideas on this ?

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post #2 of 3 (permalink) Old 07-18-13, 07:31 AM
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Re: check engine light

Make sure that the air pump is still functioning and that your hoses are in good condition.

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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post #3 of 3 (permalink) Old 07-18-13, 07:41 AM
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Re: check engine light

Previous reply on same subject ,

2002 F150 XLT

Join Date: Nov 2008
Location: Oregon
Posts: 9,305 Re: help!!!! P0410, P0491, and P2258


See if this will help you.

The pump can get water in it and freeze, as well as other problems, causing the codes P0410 and P0481. The pump should run when it's first started. Have you checked all of the fuses? There's quite a bit to the system. All of the codes are for the AIR system.
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