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2023 Wrangler Rubicon 4XE check engine light 1500 miles

6K views 31 replies 8 participants last post by  Sarge4xe 
Hi! Thanks y’all. It finally turned off on its own. After a few days. I suspected it may have also been the gas quality. I was using Costco 😅, and used a fuel cleaner around the same time it turned on. Can anyone recommend what gas they use. Online it says recommend premium and the manual says 87.
Your gas cap was loose. The loose gas cap causes an evap leak. You got a check engine code for an evap leak.

After fixing the evap leak, the jeep has to go through a specific set of driving test scenarios before it will clear. It can take several days of driving for that to happen.

I use almost exclusively costco 87 grade.
 
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