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CEL - Code P0420, 1.3k miles, 2015 EcoDiesel built in January

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2015
6K views 5 replies 4 participants last post by  philbytx 
#1 ·
So my 2015 Jeep EcoDiesel threw a CEL on my way back from folks this afternoon, about a 45 minute drive. Hot as Hades here in Central Texas today. Threw the code 5 mins after startup.

Ran the OBD-II scanner when I got home, saw it was P0420.

Just bought the truck in June, it had about 1/3 of DEF fluid in it. Dealer gave me two MOPAR 2.5g jugs of their DEF and I put in one, and put the other in the house to keep fresh. Now has just over 1,300+ miles on odometer.

Just had it in the local dealer for the TSB 18-022-15 REV. A & 21-045-15, but that code was not one of the specific codes listed. I've read the threads here about this code, but I thought it was more so limited to the MY 14 EcoDiesels?

I cleared the code with my scanner and will see if it comes back; any thought or suggestions? Thanks! :thumbsup:
 
#2 ·
I have been dealing with this issue P0420 on my 2015 Jeep GC EcoDiesel also since June. Been in for service 5 times. Last time they changed cat and rest of sensors they hadn't changed up till now including wire harness for sensors. Had the jeep for 9 days before CEL came on this morning. Waiting on a new flash but won't be ready for a month
 
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