After a recent trip, my 2008 Allegro Bus got the yellow CIL. I was able to pull the Code and it was a 411-2 (Fault Code 1866) Engine Exhaust Gas Recirculation 1 Differential Pressure. Data Erratic, Intermittent or Incorrect.
I found a discussion on the Fault Code here:
But, need some advice - I have a short trip this weekend (140 miles each way). Is that too far to go on this yellow CIL or is this something that can wait for my next trip to the Mechanic?
Any advice or insight would be appreciated. I have no idea of how critical this is, or how much it would cost to take to Cummins.