Trans failsafe prog error is to do with the gearbox not air flow problems. I only had this error once and too the truck to an Indy. He told me that it was due to a speed differential picked up by the sensors in the gear box. He flushed and changed the oil in the transmission and replaced the filter - problem sorted.
E90 318i 2007 N46 2.0 Manual
E53 X5 2004 M54 3.0 Sport Auto
E83 X3 2004 M54 2.5 Auto
Last edited by white_lancer; 10-30-2013 at 02:07 AM.