Smoke, oil consumption, and fuel trim issues with various fault codes can be traced to an internal leak at the oil separator.
Car Problem Reports
Porsche 911 Various Faults Due to Intenal Leak at the Oil Seperator
Porsche 911 Problem
Engine Affected: 3.4L 6 Cylinder
Average Mileage: 92,333 mi (80,000 mi - 105,000 mi)
Visitor, 2003 Porsche 911, 92,000 mi
white smoke in the rear right at start up. The white smoke is only for 2-4 minutes at engine start.
Visitor, 2003 Porsche 911, 80,000 mi
dealer replaced separator; cost more than $2k
Visitor, 2002 Porsche 911, 105,000 mi
Occasional inconsistent throttle response and idle. Weeping seen on and around the separator. Replaced the part, about 7 hours in shop labor.