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Greetings. When I got my 99 S80 about a month ago (app 1200 miles ago, and still running/behaving fine BTW) the "check engine" (MIL) light was always on. So I spent the money on a good DTC code reader and I also got the Autodata trouble code manual. When I checked my car it had the same code (P0442). It is correct that this generic code translates to "evaporative emissions (EVAP) system, small leak detected". According to the manual, the probable cause is listed as: " Hose connection(s), intake leak, evap cannister, evap cannister purge valve". Of course, these are just starting points for diagnosing the cause. Common shop procedure should be given in a Volvo manual, but I think it would be safe to check these areas for obvious troubles.
Also stored in my computers memory was the code P0455, which is the same fault only advising of a "gross leak, no flow". The P0442 was the priority code, meaning that it was the code that tripped the MIL light, and also generated a list of "freeze frame data" which shows the readings of certain key operating parameters that were present at the time the code was set. I have yet to learn how to interperet that data.
Obviously the problem had expanded, as the second code (p0455) demonstrates an exacerbation of the original fault.
I also ordered a Volvo VADIS 2002F (original Volvo shop manual) DVD. I'll post any info that might be helpful when I get it.
Interesting note: the ebay seller I'm getting it from made a cheesy attempt to rip me of my $80, but decided to send it after I indicated I was willing to get law enforcement involved. I paid via money order and three weeks later he emailed me claiming the the post office CALLED him to say that they lost the package. Hmmmm... and how would the post office know that they lost a package, unless someone called them to inquire...if the package was lost, how would they know who to contact....even if by some miracle they happened to jot down the return address of this particular package before they lost it, how did they get his phone number?....lastly the post office would neither concede a problem nor investigate an inquiry until a minimum of 30 days have transpired, with few exceptions such as having a damaged package with the contents partial or missing and one or both of the labels readable, and even then they would contact via mail (usually the addressee). They do not do detective work to look up peoples phone numbers! (from our local postmaster). Anyway , he mysteriously found another one he could send me "after searching and searching for another copy". Buyer beware!
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