Anyone experience a P20EE engine code yet?

[KNN]

CEL came on. Ran the scanner and got a P20EE code - SCR NOx Catalyst Efficiency Below Threshold Bank 1. Filled up half the DEF tank w/ new fluid this morning and CEL went away immediately. Anyone else experience this? I'll update if it comes back. Jeep has about 14.5K miles.

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[DwnSth]

Just had this code at 8600 miles. I suspect in my case it might have been due to a very hot and humid day. In town driving only and long idles through packed drive through etc. Cleared the code and took for a nice long test drive after sunset and have not seen the code return. The week before we had been in extreme heat with both interstate driving and off-road. Jeep did great, temps never spiked and no CEL. Hopefully this was simply a fluke but certainly keeping a close eye on things.

 

[KNN]

Glad to hear that. I wasn't able to clear my code w/ the tool. It went away after adding new DEF and hasn't returned in 1500 miles. I'm hoping it was a fluke as well.

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