SPN 191/FMI 19 This fault is typically the transmission output speed shaft signal is erratic.‪ Check as follows: ‪ Check for multiple codes: If CPC…

SPN 191/FMI 13 This fault is typically the transmission output speed shaft signal is missing.‪ Check as follows: ‪ Check for multiple codes: If CPC…

SPN 247/FMI 9 MCM engine hours data not received or stopped arriving – This fault usually occurs after reprogramming the CPC or MCM. The internal…

SPN 247/FMI 1 MCM engine hours data lower than expected – This fault usually occurs after reprogramming the CPC or MCM. The internal clocks of…

SPN 247/FMI 0 MCM engine hours data higher than expected – This fault usually occurs after reprogramming the CPC or MCM. The internal clocks of…

SPN 411/FMI 1 This diagnosis is typically EGR differential pressure failed (Low Box).‪ Check as follows:‪ Visually inspect the EGR system for leaks, obstructions, loose…

SPN 411/FMI 0 This diagnosis is typically EGR differential pressure failed high (Low Box).‪ Check as follows:‪ Disconnect the EGR Delta P Sensor. Inspect the…

SPN 411/FMI 4 This diagnosis is typically EGR Delta P Sensor short to ground.‪ Check as follows:‪ Disconnect the EGR Delta P Sensor. Disconnect the…

SPN 411/FMI 3 This diagnosis is typically EGR Delta P Sensor circuit failed high.‪ Check as follows:‪ Disconnect the EGR Delta P Sensor. Measure the…