SPN 97 - FMI 15 (Fault Code 418)
Tuesday, July 10, 2018
Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850,
Fault Codes CUMMINS Signature ISX QSX15 CM570
SPN97 FMI15
Water in Fuel Indicator - Data Valid But Above Normal Operating Range - Least Severe Level
CODES:
Fault Code: 418
PID(P), SID(S): P97
SPN: 97
FMI: 0/15
Lamp: Maintenance
REASON: Water has been detected in the fuel filter.
EFFECT: Possible loss of power, or hard starting.
Circuit Description:
The water-in-fuel sensor is in 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 down, 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 illuminates the white MAINTENANCE lamp or 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 the recommended Cummins® electronic service tool or equivalent 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 the recommended Cummins® electronic service tool or equivalent can be used to clear active and inactive faults.
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 then a malfunctioning Water-In-Fuel sensor or water in the sensor connector could be causing the fault.
• Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.
Read More:
SPN 111 - FMI 2 (Fault Code 422)
SPN 1319 - FMI 2 (Fault Code 419)
Blog.Teknisi
Water in Fuel Indicator - Data Valid But Above Normal Operating Range - Least Severe Level
 |
| Water-in-Fuel Indicator Circuit |
CODES:
Fault Code: 418
PID(P), SID(S): P97
SPN: 97
FMI: 0/15
Lamp: Maintenance
REASON: Water has been detected in the fuel filter.
EFFECT: Possible loss of power, or hard starting.
Circuit Description:
The water-in-fuel sensor is in 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 down, 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 illuminates the white MAINTENANCE lamp or 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 the recommended Cummins® electronic service tool or equivalent 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 the recommended Cummins® electronic service tool or equivalent can be used to clear active and inactive faults.
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 then a malfunctioning Water-In-Fuel sensor or water in the sensor connector could be causing the fault.
• Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.
Read More:
SPN 111 - FMI 2 (Fault Code 422)
SPN 1319 - FMI 2 (Fault Code 419)
Blog.Teknisi
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