2013 Crosstrek 120K miles. I changed plugs just before 100K miles, I put iridium ones in, old plugs looked great. Plugs I put in:
Last week, 20K miles later I was headed to lunch and had Check Eng and Traction Control light come on with flashing cruise control icon. I also noticed a slight roughness in engine. Code reader showed P0302, I reset and car ran great for 3 days and then code and roughness came back.
I ordered new plug and coil pack. Coil pack Subaru number 22433AA682.
#2 Cylinder is the one on drivers side most forward on the car, correct?
I figure Ill remove the battery again, like I previously did for the plug change and see if the new plug and coil solves the problem.
Sound like a reasonable place to start? Any comments are appreciated. Thanks, John