SPN 100/FMI 1 SPN 100/FMI 1 is typically low engine oil pressure. Check as follows: Check for multiple codes. If fault codes 100/1 and 100/3…
SPN 100/FMI 18 This diagnosis is typically very low oil pressure. Check as follows: Check for additional active fault codes. If fault code 100/3…
SPN 100/FMI 4 This diagnosis is typically an Engine Oil Pressure Sensor circuit failed low. Check as follows: Turn the ignition ON (key On,…
SPN 103/FMI 1 This diagnosis is typically turbocharger speed below threshold (High Box). Check as follows: Inspect the entire air intake system for leaks and/or…
SPN 103/FMI 0 This diagnosis is typically turbocharger speed below threshold (Low Box). Check as follows: Inspect the entire air intake system for leaks and/or…
SPN 103/FMI 4 This diagnosis is typically circuit failed low. Check follows: Disconnect the Turbo Speed Sensor (TSS). Disconnect the 120–pin MCM connector. Measure the…
SPN 110/FMI 3 This code indicates the engine coolant outlet temperature circuit has failed high. Check as follows: Check for multiple codes. If 110/3, 174/3,…
SPN 110/FMI 4 The code is typically the engine coolant outlet temperature circuit failed low. Repair the short to ground between pin 2 of the…
SPN 111/FMI 1 This diagnosis typically coolant level low. Check as follows: Turn the vehicle ignition switch ON (key On, engine OFF). Check for multiple…
SPN 111/FMI 4 This fault is typically a circuit failed low. Check as follows: Turn the ignition ON (key On, engine OFF). Read the…