So we changed the O2/AFR sensor in our 2008 Honda Civic Sedan after having the car read and getting a p1172 (I think) code. On the reading it said "Faulty AF sensor" so we replaced it. The check engine light is still on but it runs smoother and gets better gas mileage than it ever has since we've had it! Code still shows up on the reader. Is it fine or should I look more into it? I got it up to 55 and 70 and it was running way smoother than it did before by a long shot. Should I worry with it? Can the check engine light be reset?
Added (1). Not a lot of exhaust either just the normal regular amount. It was LITERALLY just replaced 2 hours ago. (the AFR sensor) Does it take a while for it to click/register or what?
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