If you don't have access to a scan tool or aren't sure how to use a code reader to clear your codes, don't worry. As a former professional mechanic, a lifelong gearhead, and a diehard Cummins ...

To identify, diagnose, and clear these codes, we use special tools called OBDII scan readers or scanners. If you don't have access to a scan tool or aren't sure how to use a code reader to clear ...