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Discussion Starter · #21 ·
In my case it was a 100% of each of those issues. The coolant temp sensor in my case was the cause. When replaced All issues cleared.

The concern was a loose wire or connection somewhere if it wasn’t the coolant temp sensor. Because if it wasn’t the sensor then it was going to cost me a lot more to troubleshoot the issue and wiring isn’t covered under the new AEM warranty that I now live under.
 

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My ‘14 eco did this last night. All has reset. Very strange. My BMW would do this sort of thing when the battery was on its way out.
 

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The issue went away after a restart, CEL when away after 3rd restart. The same problem returned today with along with an throttle response issue. Sounds like I may be in for a dealer visit, or try throwing some parts at it myself.

Is the coolant sensor was covered und AEM warranty? I would have to weigh the cost of the parts on my own vs. freebie from the dealer and rearranging somethings before the visit. Hmmmm.
 

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I've had those issues seeming caused by my blue-tooth OBD II reader. When I pull out the reader, all seems fine. Only has happened 3 or so times - now I only use the OBD II reader when I need to monitor something or check on status of regen cycle.
 

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I picked up a coolant sensor for $80 as a dealer yesterday. Installed it today. The problem was intermittent, so who know if it was “the fix.” I’m going to give it a week of driving before I do the MAP & MAF cleaning.
 

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So far so good. No new EVIC messages. The rig seems to run better too. Amazing how a little extra chatter on the CAN bus can (pun intended) wreak havoc. No wonder so many service centers just try throwing part at the problem. Thank you Jeep Garage members!
 
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