P20EE code

[Mlauber]

I bought a used 2016 eco diesel yesterday and had the check engine light come on with the P20ee code this morning. How concerned should I be about this? From what I have read it can be no big deal to a major concern. Thanks.

 

[Tremper126]

Sounds like exhaust sensor

 

[carlhenry]

NOx sensor below threshold cancel it and see it it comes back

 

[Mlauber]

Thanks for the recommendation. I ended up contacting the dealer and they are going to replace the sensor.

 

[Dan Walker]

I had the same issue on my own 2016 eco diesel.. they changed the NOx sensor but came back. Seems the EGR Cooler has been blowing coolant into the exhaust and this is more than likely the cause for my truck.. It's been at the dealership for over three weeks now. It's under warranty but no parts. I have a case open with FCA/RAM Customer care. It's not been fun. So Check your coolant level, if it keeps going down then your egr cooler is probably gone