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P0491 and P0492 Codes P0491 and P0492 Codes
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Old 02-04-2008, 09:44 AM
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P0491 and P0492 Codes
Well, I have the infamous P0491 and P0492 codes. I've already replaced the valve (the one that's on the passenger front side of the engine). The old one was pretty toast. The light was off for about a week. Now, it's back on. I can hear the secondary air pump come on when I start it up in the mornings (faint sound). Could it be the air pump? All the hoses appear to be in good shape.

Any help would be greatly appreciated.

Dan
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