Detroit DD16 GHG14 (2014-16) Fault Code: SPN 520261 FMI 31 (MCM) Speed Limitation Fault Due to Powertrain Monitoring Control

POSSIBLE CAUSES:
1. External fuel source.
2. Torque out of bounds.
3. Alternative fuel sources.
4. Add on devices, that are requesting torque modifications.

NOTE: Please see the step by step troubleshooting procedures for this specific code.

NOTE: This fault is caused by an external fuel source or torque out-of-bounds. Check injectors, alternative fuel sources, or add-on devices that may be requesting torque modifications.

PROBABLE CAUSES:
1. Check for failed cylinders/injector.
2. Reprogram the MCM with the latest version.