Join Date: Mar 2007
Location: Dutchess County, NY USA
Car: '14 Subi OBW, '02 Subi OBW (gone now, but well loved), '15 Toyota Sienna, '13 Honda CR-V
Feedback Score: 0 reviews
P0300 is a generic misfire code. P0302 means the cam/crank sensor rotational velocity measurement zeroed in on Cylinder #2 as the source of instability. It could be a bad plug, fouling of that plug, a bad wire, or a bad coil pack, partially clogged injector, a valve seal issues, etc.
Before you go crazy, start with the basics. Observe your running engine on a damp, dark night. When I was getting a misfire code, I could actually 'see' a corona glow from leakage at the wire boot to coil pack junction. Remove the wire from the coil pack and inspect both sides for any metal discoloration or carbon tracks. Cleaning it up 'fixed' it temporarily, but it would return every month or so. Eventually I just replaced the wires and coil pack.
2002 OBW base model with automatic. Added: CD player, Security System, tweeters & subwoofer, trailer hitch, lighting mods, cabin filters, hood deflector, drivers lumbar mods, winter tires.
2014 OBW Premium, CVT & Moonroof. Added: trailer hitch, lighting mods, upgraded horn, winter tire/wheel/TPMS package.