Truck Repair: engine codes on n14, n14 cummins, light flashes

Question
how do you manually pull engine codes on a 2000 freightliner with an n14 cummins?  

Answer
Turn key to ON,turn CRUISE switch to ON,bump Set or RESUME one time & codes should flash.They are 3 digit codes.It will have a long CHECK eng light(2 sec),then short STOP engine light flashes with a short pause between digits.Between faults the long CHECK engine flash(2 sec).They will keep repeating no matter how many there are.