Not finding a hit on a code P0445, are you sure that is correct? First thing to check, and it can relate to P0102 MAF low frequency, and P0449 evap vent solenoid control circuit, is that they share a common power supply. The ENG EMIS 10a fuse in the underhood fuse block is the source, check that this fuse is good, and that there is power at it, you can do this with a test light, or volt meter. If this fuse is popped, it could be as little as a faulty solenoid, or shorting in the underhood wiring. Also, you may replace this fuse, and it may work fine. That would indicate the possibility that the problem is intermittent, and you may just have to drive. If that is the case, pay attention to any pertinent conditions, in an effort to isolate it, or create a pattern to duplicate the concern. It can run without a MAF sensor, it just substitutes a value, this can also affect your shifting, but not necessarily the reverse engagement issue.
Friday, March 5th, 2010 AT 11:48 PM