I posted last week about a cylinder 4 misfire, gm's lovely 2.4 twin cam. After replacing the coil housing, plugs and boots again, I had the codes ran again today at Advance Auto. I'm having trouble figuring out the codes I got from the scan tool B1225, B1254, B1275 and B1298. The guy working didn't really seem to know what he was doing and couldn't get it to work the first 3 times he tried. He admitted he had no idea what these codes meant either but thought they had something to do with ABS... Could someone please help me in figuring this out, and what I need to do to fix it? Thanks!