A check engine light that returns after being reset means the underlying fault has not been repaired, only cleared from the vehicle’s diagnostic memory. The OBD-II system monitors engine and emissions ...

The technology available to managers and service technicians on their smartphones continues to get better—now Cummins engine owners can use a mobile app to read prioritized engine fault codes and ...

This story appears in the March 23 print edition of Transport Topics. Click here to subscribe today. Truck technicians next year will have to deal with a pronounced increase in engine fault codes ...

I was recently at a seminar going over some diagnostics for some of the problematic and reoccurring fault codes. The general discussion led us in an interesting direction about the nature of fault ...