Detroit DD15 GHG14 (2014-16) Fault Code: SPN 629 FMI 12 (CPC) Multiple Fault Descriptions

NOTE: The troubleshooting solution is the same for any and all fault descriptions.

POSSIBLE CAUSES:
1. The common powertrain controller (CPC).
2. Needs software update.

NOTE: Reprogram the CPC with the latest software release.