KIT-SEAL 4812716 - Caterpillar

Table 1
CDL Code     Description     Details    
E363-1     High Fuel Supply Temperature - Level 1     The temperature of the low-pressure fuel in the high-pressure fuel pump is high.
The ECM has been powered for at least 2 seconds.
The engine has been operating for at least 185 seconds.
There are no other faults in the electrical system.
The warning lamp will come on.
The warning lamp will go off when the temperature drops below the trip point.    
E363-2     High Fuel Supply Temperature - Level 2     The temperature of the low-pressure fuel in the high-pressure fuel pump is very high.
The ECM has been powered for at least 2 seconds.
The engine has been operating for at least 185 seconds.
There are no other faults in the electrical system.
The warning lamp will come on.
The engine may be derated by 20%.
The warning lamp will go off when the temperature drops below the trip point for 15 seconds.    Probable causes
Incorrect position of fuel shut-off valves
Fuel level in tank
Return fuel cooler
Location of the fuel tankRecommended Actions
Incorrect Position of Fuel Shut-off Valves
Make sure that any fuel shut-off valves in the feed lines between the fuel tank and the engine are open.Make sure that any fuel shut-off valves in the return lines between the engine and the fuel tank are open.Fuel Level in Tank
If the level in the fuel tank is low, the hot return fuel can raise the temperature in the fuel tank. Replenish the fuel tank at the earliest opportunity.Return Fuel Cooler
Note: The return fuel cooler is installed on the outside face of the radiator.Make sure that the fins on the return fuel cooler are not blocked with dirt or debris. Make sure that the fins are not bent or missing. If necessary replace the return fuel cooler.Location of the Fuel Tank
Make sure that the fuel tank is not close to a heat source. If necessary, shield the fuel tank from the heat source or relocate the fuel tank to a cooler location.