Jeep Rubicon 392 15K Miles check engine light coming on while on the highway?

[petrolhead90]

Any ideas? Been changing the oil and filter every 5K miles

 

[Robr651]

Plug in a code reader to the OBD port and you’ll have a better idea

 

[OldVetteGuy]

A code reader is the way to go but if you think its being caused by oil life and you don't have a scanner do the following:

Turn the ignition to the ON/RUN position, then use the steering wheel's arrow buttons to navigate to the "Vehicle Info" section of the instrument cluster display. Within this menu, select the "Oil Life" sub-menu to view the remaining oil life percentage.

Perhaps on you last oil change the reset mileage didn't take. Considering you didn't have any degradation in performance its hopefully something simple.

 

[petrolhead90]

Update, code reader showed nothing!

 

[OldVetteGuy]

So, no light now, and the tool could not pull up any CEL history or past codes? If the lights not on now and you don't have any history go go on don't give it anymore thought. Also, I imagine like most Wrangler owners you have already made sure your fuses are properly seated.

If it is a real problem and not a glitch it will be back.

 

[petrolhead90]

Light went off now. Can you explain what you mean by the fuses properly seated? First time Jeep owner!

 

[OldVetteGuy]

Light went off now. Can you explain what you mean by the fuses properly seated? First time Jeep owner!

It's a known issue with JL Wranglers about fuses not fully seated and as a result can cause electrical gremlins.
You can do a google search on it and you will find countless pages about it.

Simple fix, go under your hood, remove the fuse block cover and push down on all of the fuses in the fuse and relay center.
I can tell you first hand I had some that were not fully seated on both my 2018JLUR and 25 392, I won't be surprised if you find a couple that might not be all the way seated. While your at it take a look at the cover and you will see all the systems the fuses and relays service. It's a good thing to have in the back of your brain encase you have a future problem.

 

[Robr651]

Update, code reader showed nothing!

Maybe it’s something simple like your gas cap wasn’t fully on / seated and it tripped a code and reset once you gassed up again? If it’s gone and there’s no issues I wouldn’t sweat it.

 

[JeepCares]

Any ideas? Been changing the oil and filter every 5K miles

Hi @petrolhead90,

We are sorry to learn about your vehicle concerns. If you schedule an appointment with an authorized dealership and need an extra layer of support, please send our team a private message.

Blair
Jeep Cares

 

[BarneyM]

Update, code reader showed nothing!

Can I ask what code reader you used? A while back I tried a generic code reader and got no codes. I then connected JScan and it gave me 6 codes. Your results may very.