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How do I reset "check engine" light on my 1996 Jeep Cherokee?
I had to replace the downstream oxegen sensor and I'm wondering if there is a way for me to reset the check engine light without a diagnostic computer (some funky series of steps like turn the key 8000 times and put on the left blinker, etc).
14 Answers
- 1 decade agoFavorite Answer
Usually, the light will go out on it's own after awhile if the problem has been fixed correctly. If the light stays on, it's most likely a broken connection or wire that needs to be resoldered or replaced. I had the same problem with an oxygen sensor and found the two connecting wires were barely connected. Good Luck, Oh and by the way, AutoZone cannot reset it for you if you have smog checks in your state. It's illegal.
- 1 decade ago
Unplug both negative and positive post from battery .
This method has a 50/50 chance of working.
If it doesn't ,try it again only this time hold both cable ends together for about 5-10 min. This will dissipate any capacitors that maybe keeping the memory alive.
If this still doesn't work you'll need a scan tool.
P.S. most auto parts store will read the code for you , but won't clear it.
Source(s): Long time technician 20 yrs. exp. - natex14Lv 41 decade ago
Pull the battery out, that is the best way to reset the computer. Be careful though, your radio will reset, and you might want to make sure you have the code for that first.
You should you the diagnostic tool, just call around and see if there is a company in your area that will reset it for free. In Michigan there is Autozone, and they will do it for free.
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- Anonymous1 decade ago
most often the "check engine" light comes on because of a bad O2 sensor. they are cheap and you can replace it yourself. then you don't have to reset anything
Source(s): experience - 1 decade ago
yes, just unplug the battery for a few, if it comes back, try unplugging it again, and if it still comes back check the code and go from there. I have had bad 02 sensors from parts stores so good luck.
- Anonymous1 decade ago
It is much easier to take it to the dealer it only cost a couple of bucks well more like ten. I ran arround with mine on for a year thinking it was going to cost an arm and leg before I carried mine in.
- 1 decade ago
you can go to auto zone to have them check it for free .theyll tell you why it s on and tell you whats wrong with it .but it should have reseted its self when you replaced the oxegen sensor so there mit still be sometime wrong if not them auto zone or you can just take off the battie cables and wait 5mins them put them back on that will do the job. but id go to auto zone frist to make sure that there nothing wrong .........good luck ..........lonewolf
Source(s): i work on cars