DD15 Troubleshooting – Section 52 SPN 625 Email This Page Section 52 SPN 625 This SPN indicates a CAN fault. 52.1 SPN 625/FMI 2 52.2 SPN 625/FMI 4 52.3 SPN 625/FMI 9 EPA07 DD15 Troubleshooting Guide - DDC-SVC-MAN-0029 Generated on 10-13-2008