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Need Help SES codes P0418, P0412

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Old 04-06-2011, 01:12 AM
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Default Need Help SES codes P0418, P0412
I got 2 codes I need help with.
P0418 secondary air injection system relay A control circutr and
P0412 Secondary air injection switching valve A circut. anyone know how I can fix these? thanks. car is a 99 Camaro Z28.
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Old 04-06-2011, 01:41 AM
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Probably just a relay messing everything up.
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Old 04-11-2011, 12:03 AM
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which relay is it? location?
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Old 04-11-2011, 01:17 AM
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Let u know when I'm at work. Need to check the diagram
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