Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 418 PID: PID 097 SPN: 97 FMI: 15 Water-In-Fuel Indicator- Data Valid But Above Normal Operating Range- Least Severe Level
Circuit Description
The water-in-fuel sensor is attached to the fuel filter. The engine control module (ECM) provides a 5 volt reference signal to the water-in-fuel sensor. When the water collected in the fuel filter covers the sensor probes, the water-in-fuel sensor pulls the 5-VDC reference voltage to ground, indicating high water accumulation in the fuel filter.
Component Location
The water-in-fuel sensor is integrated into the bottom of the OEM supplied suction fuel filter.
Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.
Conditions for Setting the Fault Codes
The Engine Control Module (ECM) detected water in the fuel filter was above the sensor level.
Action Taken When the Fault Code is Active
The ECM flashes the amber CHECK ENGINE lamp, indicating a maintenance condition, immediately after the diagnostic runs and fails.
Conditions for Clearing the Fault Code
To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
The ECM will turn off the flashing amber CHECK ENGINE lamp / MAINTENANCE lamp immediately after the diagnostic runs and passes.
The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.
Shop Talk
This fault code indicates that water has been detected in the water separation fuel filter. Drain the water from the fuel filter.
If this fault code is active and there is no water in the fuel filter, a malfunctioning Water-In-Fuel sensor is a likely cause.
Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.
Possible Cause:
1) ECM calibration
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