P0170 and P0173 are in reference to the mixture value of both banks of your motor being out of range for the ME SFI control unit
Basically your engine is runniing above the limits for your fuel injection control unit.
P0455 is in reference to your purge system leaking badly
This can often times be caused by simply leaving your gas cap off. Unless this code returns after you erase it I wouldn't worry too much about this.
The fuirst set codes however will need to be diagnosed as these can be caused by numerous faults. This can range from faulty MAFS to fuel pressure regulators and most everything in between.
Mar 9, 2009 at 12:59 PM
