Driving home from work when my tachometer died...I shut down all unnecessary power users (radio, fog lamps, CD player, etc) and turned off main road...then the power faded as if I had a flat battery...my windshield wipers were slow, headlamps dimmed, etc. Put my car in nuetral, let her idle which was rough...tried to add power so I could drop her in first and limp home...but she ran rougher and then stalled out on her own. Tried to restart to no avail. When I turned key...I had power to everything except dash instruments and presumably, no power to spark plugs...the engine turned over fine...just wouldn't start. About an hour later, I gave it another chance it fired up like normal...is it a bad ignitor or an ignitor that is dying? ALso, the ECU flashes code 15...I reset the circuit by pulling the fuse for 30 seconds, then restarted it and immediately got code 15.