Ezee Posted June 5, 2018 Share Posted June 5, 2018 Has anyone had to replace scr system on new truck due to code P20EE with only 39k miles? Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/ Share on other sites More sharing options...
ksrolloff Posted June 5, 2018 Share Posted June 5, 2018 yes, replaced on 2018 mru 16,000 miles … don't recall the code Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-400047 Share on other sites More sharing options...
Ezee Posted June 5, 2018 Author Share Posted June 5, 2018 THanks any other issues afterwards? Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-400048 Share on other sites More sharing options...
Mackpro Posted June 5, 2018 Share Posted June 5, 2018 P20EE is a NOX code which could be caused many different things. We have not seen this code here with our 17/18 common rail engines but have seen it on older trucks. Anything from EGR, turbo, injector to the DPF or SCR "hot box" could be the cause. There is a bulletin on it but mostly goes over making sure you do the tests correctly and not skipping steps and what info gets reported to Tech Support for review. Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-400072 Share on other sites More sharing options...
ksrolloff Posted June 5, 2018 Share Posted June 5, 2018 no problems after replacing scr about 7000 miles Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-400075 Share on other sites More sharing options...
Mackpro Posted June 12, 2018 Share Posted June 12, 2018 New bulletin released last week on the 20EE code on the common rail engines. Very detailed info. Hopefully they got yours figured out. Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-400438 Share on other sites More sharing options...
bbigrig Posted June 13, 2018 Share Posted June 13, 2018 We have replaces a few SCR assemblies on that code as well. E case made the calls on those. Also had one that was an output nox sensor that would be about 75 ppm drift from the other sensor on cool down. Should be 40ppm or less Only seeing this issue on the 2018s so far. Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-400466 Share on other sites More sharing options...
Mackpro Posted June 13, 2018 Share Posted June 13, 2018 (edited) We have been lucky down here with our common rail engines , other than software and PM sensors we have had zero issues. Hopefully it stays that way! Edited June 13, 2018 by Mackpro Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-400470 Share on other sites More sharing options...
bbigrig Posted June 14, 2018 Share Posted June 14, 2018 (edited) Just got our 5th P20EE in the last 2 weeks. All 2018 trucks with the stand up SCR unit mounted behind the cab. $7K to replace the SCR unit up here. The E case was 1 small paragraph description of the results of the testing. The E case response was 1 sentence...replace the SCR cat. Must be a bad batch. Edited June 14, 2018 by bbigrig Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-400510 Share on other sites More sharing options...
mackcat12 Posted June 30, 2018 Share Posted June 30, 2018 They just replaced mine this week had p20EE code about 7 times Quote Link to comment https://www.bigmacktrucks.com/topic/53498-scr-replacement-on-2018-granite/#findComment-401623 Share on other sites More sharing options...
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