Help: Car is at the dealer cos they can't find why I'm only boosting 5psi
07-21-2006, 04:46 PM
#1
AudiWorld Super User
Thread Starter
Join Date: Dec 2004
Posts: 2,218
Likes: 0
Received 0 Likes
on
0 Posts
Help: Car is at the dealer cos they can't find why I'm only boosting 5psi
They showed me their error code print out, but of course the moment I got home I forgot to write it down and memorize what it said...but something like "negative blah blah".
So like I said they see I'm only boosting 5psi and know there is a leak, but can't see where this time. Just last Wednesday I had a vcacuum leak and replaced the cracked item. 30 minutes that day after driving, CEL comes on again.
Back at the dealer. Of course at this point it's only a guessing game contribution, but I'd like to hear what may most likely fail at 38,000 miles that may cause this leak and low pressure boost.
TIA.
So like I said they see I'm only boosting 5psi and know there is a leak, but can't see where this time. Just last Wednesday I had a vcacuum leak and replaced the cracked item. 30 minutes that day after driving, CEL comes on again.
Back at the dealer. Of course at this point it's only a guessing game contribution, but I'd like to hear what may most likely fail at 38,000 miles that may cause this leak and low pressure boost.
TIA.
07-21-2006, 07:11 PM
#6
There is a boost related DTC with a description similar to "Boost pressure negative deviation.....
exceeded" or something like that, it means the boost pressure requested, (has a range of acceptable values + or - from the requested boost,) and the boost pressure level was less than (exceeded) the negative tolerance limit allowed, and that minimum boost pressure was not achieved.
