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

Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Spartan Motorhome Chassis Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 09-09-2021, 03:01 PM   #1
Senior Member
777 Driver's Avatar

Entegra Owners Club
Spartan Chassis
Join Date: Feb 2010
Posts: 2,724
Spartan DEF System Letter 9/9/21

Just received this letter via email:

Here's the text from the letter:

At Spartan RV Chassis, we continue to make improvements to our DEF system supplied by Shaw Development, with primary focus on the DEF sensor. In January 2021, we launched a DEF sensor with greater reliability which has a shield around the DEF sensor to protect it in its environment. This new sensor was launched for both installation in production units and for field service replacement. We have seen significant improvements in sensor reliability based on this design with almost zero field failures.

In April of 2021, alongside many in the auto industry, we were impacted by the global chip shortage. This global shortage impacted the supply of components utilized in the Shaw DEF system, significantly impacting our supply of sensors and complete DEF systems for both new vehicle production and service. We were placed on supply constraint and have been managing the situation as best as possible since that time to minimize the impact to our customers, which has included long hours from our customer service and supply chain teams.

We pride ourselves in exemplary customer service, and it is a core value for our business. The last few months have been a real challenge for our team and our customers alike. We apologize for any inconvenience the DEF situation has caused our customers.

We are beginning to see major improvements in our component supply base and corresponding parts/product availability. Our goal is to eliminate our DEF parts availability issues by the end of September. To that end, we will continue to work with our service centers and coach OEM partners to address all outstanding customer issues as they arise. While this DEF system and supply issues have not been specific to Spartan, we are working with our industry partners to address the situation. We have worked closely with Cummins, the RVIA and directly with the EPA to provide options for relief to RV owners experiencing DEF system failures. We are hopeful that if agreed to and adopted, these measures could lessen the impact this system failure has had on the RV industry.

We will keep you appraised of developments as they occur in the near term as we look to put this issue behind us.

Moving forward If you experience any of the following fault codes, please contact Spartan RV Chassis at (800) 543-4277 and we will help you through the next steps you need to take with your coach.

SPN 3364 FMI 9 (Cummins fault code 3868) - Aftertreatment diesel exhaust fluid quality- Abnormal update rate.
SPN 1761 FMI 9 (Cummins fault code 4677) - Aftertreatment diesel exhaust tank level - Abnormal update rate.
SPN 3031 FMI 9 (Cummins fault code 4572) - Aftertreatment diesel exhaust fluid tank temperature- Abnormal update rate.

Also, please see the Cummins Engine Lamp Identification Guide pictured below or visit their website at This is the process the engine will go through when the DEF sensor sends a fault code to the dash. Your motorhome is not equipped with a switch to perform a parked regeneration. If your engine aftertreatment needs a forced regeneration, please contact your local Cummins service provider, or contact Spartan RV Chassis @ (800) 543.4277 for assistance with locating.

Best Regards,

Steve Guillaume
President Speciality Vehicles
"I would rather have questions that can't be answered than answers that can't be questioned."
2018 Anthem 42DEQ
777 Driver is online now   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!



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
DEF ON Def Off notice brianjoan Sprinter Chassis Forum 3 11-29-2017 09:11 PM
DEF consumption or MPG of DEF? erstanfo Class A Motorhome Discussions 16 03-13-2016 03:00 PM
SPARTAN SAFETY RECALL 14V-747 letter notice Wade and Ann Entegra Owner's Forum 4 01-31-2015 10:18 PM
DEF Or No DEF TeresaOwen1 General Discussion 46 12-07-2014 08:00 AM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 02:12 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.