Found out by accident that the motorhome was due a recall. A possible crack in the pipe on the EGR. They found it cracked and the pipe , EGR valve and the intercooler all had to be replaced.
ref 6152-290-TUBO-EGR
Tubo is Italian for tube / pipe / hose. EGR is self explanatory.You can check VIN number at the bottom RH page.
