| Event Code | ||
|---|---|---|
| Code | Conditions which Generate this Code | System Response |
| E363(1) High Fuel Supply Temperature | The fuel temperature is above the trip point temperature. | The code is logged. |
| E363(2) High Fuel Supply Temperature | The engine power is derated. The derate is 12.5 percent for every degree over the trip point. The maximum derate is 25 percent. The code is logged. | |
| E363(3) High Fuel Supply Temperature | ||
Probable Causes
Fuel Supply
- Fuel level
- Fuel lines
- Fuel pressure regulating valve
Engine Operating Temperature
- High coolant temperature
Air Temperature
- High ambient air temperature
Recommended Actions
Fuel Level
Ensure that the fuel tank contains enough fuel. As the fuel tank level decreases, the fuel temperature of the remaining fuel generally increases.
Fuel Lines
Restricted fuel return lines may produce very high fuel temperatures. Ensure that the fuel return flow to the fuel tank is not obstructed.
Fuel Pressure Regulating Valve
An improperly operating fuel pressure regulating valve may cause high fuel temperature. If a problem is suspected, inspect the return fuel pressure regulating valve. Clean any contamination or debris that may keep the regulating valve from operating properly. If debris is present, find the source of the contamination. Replace the return fuel pressure regulating valve if the valve is worn or damaged.
High Coolant Temperature
The fuel is supplied to the injectors through a passage in the cylinder head. An overheated engine could cause the fuel temperature to reach the trip level. If high coolant temperature is suspect, refer to Troubleshooting, "Coolant Temperature Is High".
High Ambient Air Temperature
High ambient air temperature can reduce the cooling system's effectiveness. High ambient air temperature can increase the temperature of the fuel in the fuel tank.