SPRING-DETENT 7W1901 - Caterpillar

This procedure covers the following diagnostic code:
Table 1
Diagnostic Trouble Code for Water in Fuel
J1939 Code Description Notes
97-15 Water In Fuel Indicator : High - least severe (1) Water has been detected in the fuel that is contained in the fuel/water separator bowl. The water has been present for at least 40 seconds.
The warning lamp will come on.
97-16 Water In Fuel Indicator : High - moderate severity (2) Water has been detected in the fuel that is contained in the fuel/water separator bowl. The water has been present for at least 60 minutes.
The warning lamp will come on.
The engine will be derated at 17.5% per second up to a maximum of 35%. Note: Identifying the presence of water in the bowl by eye may be impossible. Water may turn dark yellow in color in the fuel system. The similarity in color would prevent the ability to differentiate the water from the fuel.Troubleshooting Procedure
Turn the ignition key to the OFF position.
Drain the fuel/water separator bowl. Refer to the Operation and Maintenance Manual, "Fuel System Primary Filter/Water Separator - Drain".
If necessary, prime the fuel system. Refer to the Operation and Maintenance Manual, "Fuel System - Prime".
Turn the ignition key to the ON position. Do not start the engine.
Wait for 1 minute. The "Water in Fuel" warning should disappear. If the "Water in Fuel" warning is still present, the switch may be faulty. Refer to Troubleshooting, "Water In Fuel Sensor - Test".
If the "Water in Fuel" warning disappears within 1 minute after the bowl is drained, start the engine. Allow the engine to run for 5 minutes.
If the "Water in Fuel" warning reappears, the fuel supply is contaminated with water. Drain the fuel tank and then fill the fuel tank with clean fuel. Repeat Steps 1 to 5 in order to reset the warning light.