Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-19-2020, 04:47 AM   #1
2 Rivet Member
 
elgo's Avatar
 
Currently Looking...
Las vegas , Washington
Join Date: Jul 2016
Posts: 60
white powder in exhaust pipe and P205C CEL

I have a 2011 Sprinter (2012 AI with 39k miles) and the CEL came on. There is no DEF light and the CEL is not flashing. No countdown (yet). Scanner suggests P205C issue (heat sensor in DEF tank). History showed P205B codes (also heat sensor). I am traveling in Albuquerque, and if this is just an issue related to heating the DEF fluid above freezing levels, I would prefer to drive home to CA where any work will be warranty for a year. I also noticed white powder (like baking soda) inside exhaust pipe). Also, the DEF seems to be consumed at high levels.

Properly thawing DEF isn't an issue on this trip as I'm not in freezing temps, but does the high consumption rate of DEF or white powder point to larger issues I need to be concerned about? I am out of warranty except for EGR valve which has a 10 year warranty, so hoping that this is a related to EGR...
elgo is offline   Reply With Quote
Old 02-19-2020, 04:52 AM   #2
4 Rivet Member
 
2018 30' Classic
Williamsburg , VA
Join Date: Dec 2019
Posts: 298
Definitely points to the DEF. My guess would be the DEF injector is leaking.
__________________
2018 Classic 30
2012 F250 6.7l
US Army Watercraft Engineering Officer
primepower is offline   Reply With Quote
Old 02-19-2020, 08:18 AM   #3
Rivet Master
 
2018 25' International
Slidell , Louisiana
Join Date: Sep 2017
Posts: 3,477
There is some limited information on some truck forums about this. Summary:

1. Partially plugged Injector could be the issue - remove it and clean it with warm fresh water
2. Gen 12 and earlier systems can experience DEF injection runaway due to the NOX sensor interpreting excessive Ammonia (DEF is Urea which is converted to Amonia and then reduces NOX back to N2) as NOX. Newer systems add a Urea detector. Older systems require a software fix and system reset to reduce this issue once it gets started.
__________________
Brian
BayouBiker is offline   Reply With Quote
Old 02-19-2020, 09:59 AM   #4
2 Rivet Member
 
elgo's Avatar
 
Currently Looking...
Las vegas , Washington
Join Date: Jul 2016
Posts: 60
Thanks for the replies. I'm at a Silverstar Autohaus in ABQ and they have indicated that it is a faulty pressure sensor for DEF.
elgo is offline   Reply With Quote
Old 02-19-2020, 10:44 AM   #5
2 Rivet Member
 
elgo's Avatar
 
Currently Looking...
Las vegas , Washington
Join Date: Jul 2016
Posts: 60
The error code says there is a short circuit to ground in pressure sensor.
elgo is offline   Reply With Quote
Old 02-19-2020, 11:43 AM   #6
Rivet Master
 
2018 25' International
Slidell , Louisiana
Join Date: Sep 2017
Posts: 3,477
Well there you go! It's nice when the computer will tell you what's wrong.
__________________
Brian
BayouBiker is offline   Reply With Quote
Old 02-19-2020, 12:39 PM   #7
2 Rivet Member
 
elgo's Avatar
 
Currently Looking...
Las vegas , Washington
Join Date: Jul 2016
Posts: 60
Quote:
Originally Posted by BayouBiker View Post
Well there you go! It's nice when the computer will tell you what's wrong.
These guys are telling me that the Sprinter DEF related components are frequent problems (pumps, NOX sensors, heat sensors, etc). Everytime it requires a fix is going to run $2000. Good thing you are still in warranty - mine choose to break a few months after my warranty expired. I'm looking into a scanner now.
elgo is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
2008 Airstream Interstate Black Water Dump Valve Installed touching exhaust pipe!! solar-guy Sprinter and B-van Forum 0 05-09-2011 10:54 AM
Need tip for CEL on 2005 2500 Suburban Davis Tow Vehicles 13 01-28-2009 04:58 AM
Exhaust pipe for plumbing Devoman Leaks - Weatherstrips, Gaskets, Caulks & Sealants 10 10-26-2008 06:20 AM
Need Ideas on Removing Exhaust Pipe swebster Mechanics Corner - Engines, Transmission & More... 12 11-15-2005 11:21 AM
Onan Generator Exhaust Pipe swebster Mechanics Corner - Engines, Transmission & More... 1 04-20-2005 07:16 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 11:35 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.