SPN 1073/FMI 4 This fault code indicates that the Jake Brake Stage 2 circuit failed low. Check as follows: Disconnect the front injector valve cover…
SPN 1077/FMI 5 SPN 1077/FMI 5 indicates a quantity control valve current too low. Check as follows: Disconnect the quantity control valve. Measure the resistance…
SPN 1073/FMI 5 This fault code indicates that the Jake Brake Stage 2 circuit failed open. Check as follows: Disconnect the rear injector valve cover…
SPN 1077/FMI 15 The fault condition is typically related to an internal or external leakage of the high pressure fuel system. The MCM monitors the…
SPN 1077/FMI 14 The fault condition is typically related to an internal or external leakage of the high pressure fuel system (too high, Leak Down…
SPN 1077/FMI 7 The fault condition is typically related to an internal or external leakage of the high pressure fuel system. The MCM monitors the…
SPN 1172/FMI 2 This code is typically a coolant temperature/compressor inlet temperature plausibility error. Check as follows: Disconnect the Turbo Compressor Inlet Temperature Sensor. Inspect…
SPN 1172/FMI 3 This code is typically sensor or circuit failed high. Check as follows: Turn the ignition ON (key ON, engine OFF). Check for…
SPN 1172/FMI 4 This code is typically sensor or circuit failed low. Check as follows: Turn the ignition OFF. Disconnect the TCI Sensor. Disconnect the…
SPN 1324/FMI 13 The fault condition is related to cylinder #2 exhibiting a misfire event. The entry conditions for this code are: Engine speed is…