Water-In-Fuel Indicator – Data Valid but Above Normal Operational Range – Least Severe Level
|Fault Code: 418
LAMP: Amber (Maintenance flashout)
Water-In-Fuel Indicator – Data Valid but Above Normal Operational Range – Least Severe Level. Water has been detected in the fuel filter.
Possible white smoke, loss of power, or hard starting.
The water-in-fuel sensor is attached to the fuel filter. The water-in-fuel sensor sends a signal to the ECM when a set volume of water has accumulated in the fuel filter. The water-in-fuel circuit contains two wires: A ground wire and signal wire.
The water-in-fuel sensor is integrated into the bottom of the OEM supplied suction fuel filter. The OEM supplied fuel filter is located on the intake side of the engine. For marine applications the water-in-fuel sensor is mounted in a filter housing which contains a serviceable element. The filter housing location will vary with each OEM.
The water-in-fuel is integrated into the fuel filter. It is automatically replaced whenever the fuel filter is replaced. For marine applications the sensor is not integrated into the fuel filter and is a serviceable item.