2018 ENTEGRA ANTHEM Fuelpropulsion System Problems

Having heard rumors for some time of the dreaded DEF shut down while using our motorcoach, without a recall of the unit , we have to assume the coach is safe to use. Ours had been parked in the storage building for about 10 days. Yesterday I went to get it out.When I started the coach it immediately turned on the check engine warning. It threw 3 codes, SPN#3374, SPN#3031, & SPN#1761. I’m told the engine will derate first by 25%, next it debates by 40%, then finally to limp mode of 5 mile per hour. If this had happened the week before I would have had a wife and two dogs, in 95 degree weather with no engine, no air conditioning and about 250 miles from home. When I contacted the manufacturer I was told Parts might be available mid August to September. Fortunately I was at home. There...

DEF failure 7/28/2020. Can not drive Vehicle. Goes into slow mode There are warning lights and messages that state do not drive.

VEHICLE WAS STATIONARY. AFTER STARTING ONCE TO FILL AIR PRESSURE, TURNED OFF AND 1/2 HOUR LATER TURNED KEY TO ON AND THE CHECK ENGINE LIGHT STAYED ON. THREE ERROR CODES ALL RELATING TO DEF WERE DISPLAYED. SPARTAN SENT OUT A NEW DEF HEAD AND IT WAS REPLACED. THE NEXT WEEK AFTER ABOUT 800 MILES OF DRIVING AND SEVERAL STOPS AND STARTS ONE OF THOSE THREE CODES IS NOW DISPLAYING. WAITING FOR CUMMINS TO DIAGNOSE THE CURRENT ISSUE. THE DEF ISSUE CAN LEAD TO DERATING AT ANY TIME, WHICH I HAVE NOT HAD EXPLAINED TO ME QUANTITATIVELY. THIS POSES A CONSIDERABLE SAFETY HAZARD IF RUNNING AT 65 MPH ON A CROWDED INTERSTATE AND THE COACH SLOWS DOWN TO 5 MPH.