CHECK ENGINE LIGHT WITH CODE;

Kept getting code SPN 652/FMI 7 popping up for 2 weeks. I would reset it with my OTR tool and about every 100 miles or so it would come back. I had the valve adjusted and ran the injector cut out test and others. All tests came back negative, no faults. So my last option was to do a force regen, took about an hour and the code has NOT came back. It’s been 1 month. Seems a good force regen could clear those “Ghost” codes.