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codes p2004 and po410 and po491

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codes p2004 and po410 and po491  the only one i can find imfo on is the p2004 can some help me out i am unable to find any imfo regarding the 410 and 491 codes
Vehicle: 2005 ford focus 3.2

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P0410 FORD - Secondary Air Injection System Malfunction

Read more: https://www.autocodes.com/p0410_ford.html

P0491 FORD - Secondary Air Injection System Insufficient Flow Bank 1

Read more: https://www.autocodes.com/p0491_ford.html

Looks like both codes are related to the Air Injection System.

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