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p0410 and p1411 error code question

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my car 2001 c4 manual 6, has had a recurring p0410 and p1411, I have read the post's on the forum's and I have replaced a few items(vacuum canister and most of the vacuum hoses with a electric changeover valve, the one behind the alternator, however I still get the same codes days after resetting, moreover my check engine light comes on after the car has been running for awhile, which i assume should not happen. To the best of my knowledge the air injection pump only runs for a minute or so after starting car for first time why would it trigger say 45 minutes into a drive? any ideas?

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I'm sure others have a spot on diagnostic, but If you replaced the air/electric changeover values and your fan runs properly then it probably is a leak somewhere in your secondary air intake system. I just did this service 3 months ago and it fixed those same faults. Also, when my codes did pop, they did so shortly after start-up and driving(maybe 2-5 minutes) not 45. Double checking all components for leaks might be a good preliminary start.

1999 C4 @96K miles.

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