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P0173 Diagnostic Trouble Code Discussion for November 2008

Fuel Trim Lean Or Rich (Bank 2)

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Trouble Ticket Help Requests for DTC P0173
Help Request Posted
1999 BMW 328i 2.8L Excessive Emissions
P0173: . I have this bimmer with no vacuum to the fuel pressure regulator. It appears that some one has connected the plastic tube from the fuel regulator to the pcv/vent valve so there is no vacuum source. I cannot find the vacuum diagram in small data so I would like...
November 12, 2008