Coaches with NO DEF Head Issues Survey

[oem]

Same coach, fewer miles no DEF issues. Numerous others though!

[bsaldeen]

2017 Anthem
65000 miles

No *known* issues. We bought the coach from original owner, and have put about 20,000 miles on it in last 18 months.

We did have an engine sensor failure (not a DEF sensor) at Elkhart last fall and while that was getting fixed at the Cummins shop they did a regen. I got the feeling it was sort of "preemptive" but not sure.

Use "Blue DEF" exclusively and (because of paranoia!) started testing it with a specific gravity tester a few months ago. Had a couple of boxes from Walmart that didn't seem like they were well sealed, but they tested ok.

DEF is probably a commodity item and all the same, but I feel better about getting the name brand for a few bucks more.

[tom chelbana]

With as much information as I have gathered from 2017 to today there are over 5,000 diesel coaches that are effected by this DEF problem with check engine lights and DEF codes. A lot of motor homes that could and will be having problems in the next year or two unless some retro fit can be developed.

[GeezerViz]

2017 Insignia in-service Feb. 2018. 30k miles, no DEF issues. Walmart only DEF.

[Ray Huffman]

Year make and model in signature Nearly 15,000 miles and no problem. Two things, I fill DEF when reach half tank and never park more than a month unless fuel and DEF tank is full. If you don't moister can be drawn into both fuel and DEF tank.

[Johnontheroad]

2015 Aspire 46000 miles no DEF failures. But failed transmission, radiator, dash AC, slide motor mounts, toilet, wiper arm, shocks, microwave, and air leaks are some of the low lights of this coach. But I do have it running well now and keeping fingers crossed.

[The Taj]

Originally Posted by brobox

Pre 2017's will not be effected by the new mandated DEF sensors

Chuck,
What changed between 2016 and 2017?

[brobox]

Originally Posted by The Taj

Chuck,
What changed between 2016 and 2017?

The EPA mandate went into effect in 2016. Many of the 2016 coaches were built on 2015 chassis which were not required to have the new DEF sensors. Any chassis built before 2015 will not have the DEF sensor problems.
2017 coaches with 2016 and newer chassis will have the new mandated DEF heads with the new sensors. However, there is a "chance" that Spartan may have been using old stock as well. They did on my 21 installing a Gen 5 DEF that had already been replaced with Gen 6's, but that is just speculation judging from my coach.

[mbaril]

2017 Aspire 44B, 33,000 miles, def head failures In March 2020. Was able to get a new one installed the next day

[onholdguy]

Probably jinx myself. 21 anthem. New in October. Say in Florida till Feb. Drive to perry ga. And back. Then 5000 miles to Texas and Ohio. No problems YET. Def from Walmart. Hopeing and praying

[jagmoor]

2014 Anthem
Sensor failure at 48,737

[RVFunlovers]

I am afraid to post this as well.
2017 Cornerstone with 36000 miles. 15000 from us in the last year with no issues. I have no records before last summer.

Keeping my fingers crossed and still would like a spare def head.

[bill2011]

2017 Anthem, 52,000 miles. No DEF issues yet.

[Mimsie]

2017 Anthem
71,000 miles
Fill def at the pump
Never sits for more than a month
No issues