i've got a 2002 330i; have an intermittent fault code p0444, whicjh appears to be associated with the leak detection pump or the purge valve. seems to be OK at cold temps (cold for florida, anyway), happens more often when temp warms up (above 70-75 degress).
any thoughts on how to check whether it is the leak detection pump, or just the hose connections? where is the purge valve?