PO455 again - Saab 9-5 Bulletin Board - Saabnet.com
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PO455 again
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Posted by Steve [Email] (more from Steve) on Fri, 27 Nov 2009 19:05:20 Share Post by Email
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So I got the check engine light again after thinking I fixed it a month ago with a new gas cap; PO455 is the culprit. 1999 9.5 automatic wagon with 104k.

It says exactly this: "Gross leak/no flow evaporative emissions leak detected."

With that little bit of info, does anyone have any further ideas on how to trouble shoot and fix this myself before paying to have it checked out? When I spoke to one of the local repair shops the mechanic said "we would need your car for the day..." and that sounds expensive to me. Car is still running great and it took a month for the light to come back on so I'm hoping it's minor. Any other PO455 suggestions are appreciated.

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