SPN 3058 means that the EGR system monitor has a problem. Each FMI is different as shown below.
FMI 10 – Abnormal rate of change
FMI 16 – Data valid but above normal – moderately severe
FMI 18 – Data valid but below normal – moderately severe
Things to check:
motor control module software version
EGR sensor
Clean exhaust gas recirc system
