Question about 2004 Jeep Grand Cherokee

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Little engine light is on on the dash

I recently had a recall done on the air bags, and oil changed Friday. This morning my engine light came on.

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  • Peter
    Peter Mar 26, 2014

    Check the oil , filter and pug. to verify and they are right so no loss of oil. Does the light just stay on? Does it flash in a numbered pattern? Does the light tell you what system like door open? The first tech is correct you need to hook a scanner to it to see what the code is. Most auto parts stores will do that as a free service. That is a starting point just because it says o2 sensor does not mean always the o2 sensor is bad. There may be a problem making the o2 sensor read out of specified parameters. You will still have to figure out the problem. When the recall was done the tech may have not followed the procedure 100% and it cause a code also. If it's possible you need to notify the shop where the work was done and let them handle it first is if it was their fault you will not have to pay. Some shops offer a free tow service to pick the vehicle up and save you the trip . This also assures that there may be less chance of any damage occurring that might cost them more than the cost of a tow truck. Ask if they have this free service as you fear the vehicle may be damaged if you drive it to them. People makes mistakes and honest people will try to rectify the mistake. Give them a chance but voice your concern.


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  • Jeep Master
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Donna, please connect any scan tool and read the DTCs.
then post them for help.
THE CEL glows for smog reasons,at the least or for worst but does not glow for all errors. so alway scan first then ask questions.
or its all just water under a bridge.

Posted on Mar 25, 2014

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Posted on Jan 02, 2017

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SOURCE: i had an oil change

Autozone, Advance or any good parts store can do it for you,

Posted on Apr 03, 2011

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