0 442

No, not an Olds 4-4-2. I wish.

I got a PO442 code. Evap vacuum leak. What's the sequence for finding the leak?

Thanks!

First make sure your gas cap is on correctly. If it's not, that's the code you get. Next step would be to bring the cap to auto parts store to have it tested or simply replace it. These are the most common reasons for the code.