Cummins ISC Diesel Engine Code 1899

This particular problem is on a 2009 Cummins ISC diesel engine. This model is an inline 6 8.3 Liter running in a Thomas HDX pusher school bus. The amber light presented itself on a field trip but did not cause any running problems mainly because it was an emission code. When the onboard computer does… Continue reading Cummins ISC Diesel Engine Code 1899