Check Engine Light Question -
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post #1 of 3 Old 12-04-2012, 04:46 PM Thread Starter
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1996 XJ Cherokee 
Join Date: Jan 2012
Location: Mint Hill
Posts: 93
Check Engine Light Question

so i threw a p0420 code a while ago, and i have replaced the o2 sensor after the cat, and had a new cat installed. i haven't had any cel's with my jeep since i bought it, and me not being a big fan of electronic work i usually have someone more in the know work on it when electronics were involved. That being said, now that i have replaced those parts, is it best to have the code cleared, or can i just remove neg wire? or will the code fix itself after driving for a while? jeep is a 97 if that matters. hope someone has good advice! in years past i wouldn't have worried about it too much, but i moved to North Carolina where we have inspections, and mine is due

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post #2 of 3 Old 12-04-2012, 06:29 PM Thread Starter
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1996 XJ Cherokee 
Join Date: Jan 2012
Location: Mint Hill
Posts: 93
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post #3 of 3 Old 12-04-2012, 06:34 PM
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1983 CJ7 
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Location: Leicester
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You should use an obdII scanner & clear the codes from your computer. That way if the light comes back on for other reasons you wont have the previous stored codes showing as well. Welcome to NC, you'll have to pass the emissions test every year before the dmv will let you renew your tag registration.

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