P0444, p0171, p0313 BMW -

Question

what possibilties are there with these three codes on 2002 330xi bmw?

Answer 1

P0171 Fuel trim lean Bank 1

P0444 Evaporative purge valve

The possibilty for all three would be a vacuum leak at the purge hose  connection causing a lean condition and a misfire on the number 3 cylinder.