Posted on October 9, 2023 by sam DD15 SPN 628/FMI 14 Troubleshooting SPN 628/FMI 14 SPN 628/FMI 14 indicates an XFLASH failure. Replace the CPC and reprogram with the latest software release. Related Posts DD15 SPN 723/FMI 14 TroubleshootingSPN 723/FMI 14 A typical diagnosis is swapped pins. If this SPN and FM:I are active, verify that the wiring… DD15 SPN 636/FMI 14 TroubleshootingSPN 636/FMI 14 A typical diagnosis is swapped pins. Note: If the sensor is removed, be sure to check the sensor… DD15 SPN 630/FMI 14 TroubleshootingSPN 630/FMI 14 This fault code indicates a communication interruption between the CPC and MCM. It is caused by either… DD15 SPN 3695/FMI 14 TroubleshootingSPN 3695/FMI 14 This fault is typically one of the following: DPF Regen Inhibit Switch message not received this… DD15 SPN 2623/FMI 14 TroubleshootingSPN 2623/FMI 14 This fault is typically the PWM Accelerator Pedal J1939 GAS1 and GAS2 signals are missing.. Check as…