Secondary Air pump & valve

[The Cleaner]

The part in the upper right on the diagram with no number is usually the problem when you have a faulty secondary air pump. That valve does 2 things, it opens up to allow circulation when the pump is needed. More important is what it does when you shut down. When you shut down that valve has to be closed. If it's not closed moisture will get into the secondary air pump and cause it to fail.

Check the vacuum hose to the valve, they are common to crack.

[yenanx5]

Originally Posted by The Cleaner

The part in the upper right on the diagram with no number is usually the problem when you have a faulty secondary air pump. That valve does 2 things, it opens up to allow circulation when the pump is needed. More important is what it does when you shut down. When you shut down that valve has to be closed. If it's not closed moisture will get into the secondary air pump and cause it to fail.

Check the vacuum hose to the valve, they are common to crack.

Dear The Cleaner,
2001 X5 3.0i -- I went to autozone for the obd check, the error code was p0492. I was replace the second air valve and the pressure hose. The SES light was gone for 3 days. And then I went back to autozone for the obd chech again. it still showing the error code p0492 even the SES light is not on. Why is it? Do I have to clear the error code before take it back to autozone for recheck? Does it clear by itself?
Please advise
Thank you