Fuel pump circuit open, pcm to battery. Anyone figure out what the heck this code is?? Car has been running like crap, has a bad miss through all rpm. Think its maybe is the PIP crapping out. Hooked up a timing light and took awhile before the #1 cylinder would light it up. Seems intermintent sometimes, at idle the rpm will jump up a bit and it will be fine for awhile. Hooked up my scantool and my spark is jumping from 20 degrees to all the way up to 30 degrees at idle. Is it supposed to do that??????