So i just realized the spark plug gap is suppose to be 1.0mm....(i got a 99 accorD)

i've been driving around for 3k miles...since i change my spark plugs I put a gap of .44mm, cause that was what I assumed... (civics, integra) . Does it mean because of the smaller gap, I probably was burning richer that normal? I wonder if this have anything to do with my CEL (o2 sensor high voltage) .. high voltage because it senses burning rich

 

1.1 mm is pretty much standard; it is the last 2 digits of the NGK plug number IE ZFR5F11
the larger gap gives a better spark size and burn time.
I'd guess it is worth the time and effort of resetting the gap to see if it clears the code.