SPN 1569 FMI 31 is a diagnostic trouble code for engine protection torque derate.
FMI 31 – Engine Protection Torque Derate Condition Exists
Troubleshoot:
DEF sensors and line, update ECM
Video explaination:
SPN 1569 FMI 31 is a diagnostic trouble code for engine protection torque derate.
FMI 31 – Engine Protection Torque Derate Condition Exists
Troubleshoot:
DEF sensors and line, update ECM
Video explaination: