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Old 06-12-2012, 07:41 AM
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Hogie Hogie is offline
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Location: Liv'n where I am
Join Date: Dec 2006
Posts: 652
Mein Auto: 330i, Z4 3.0, 535i

I reset the code and it ran clear for a couple of days. It came back this morning (P0492) secondary air bank.

However, is this a true fault? The secondary air only runs for a couple of minutes. My code appears at least 15 minutes into driving. The air pump is not even running at this point. Is this a false positive. Could it actually be a faulty O2 sensor?

On my Z3 had simialr problem and SES came on with in first minute of cold start. This was a bad hose.

I just don't think it is an air leak when the pump isn't even running.
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