I have a 2002 Buick Regal with the 3.8 liter V6.
Check engine light came on and I checked the
code, P0410. Air injection system malfunction.
I can reset the code and it will stay off for a while
but within a short period of time it will reappear.
I know there is a check valve and a smog pump,
where do you think I should start ?