E390 Fuel Filter Restriction
Conditions Which Generate This Code:
The Electronic Control Module (ECM) detects an excessive pressure drop across the fuel filter element. Information on default settings and ranges for this event code can be found in Troubleshooting, "Event Codes".
System Response:
The event code is logged.
E390(1)
- There are no performance effects.
E390(2)
- The engine power will be derated.
The fuel filter element may need to be replaced.
Test Step 1. Replace the Fuel Filter Element
- Replace the fuel filter element.
- Restart the engine and check for an active event code.
Expected Result:
The event code is no longer active.
Results:
- OK - The event code is no longer active.STOP
- Not OK - The event code is active.
Repair: Perform the diagnostic functional test Troubleshooting, "Fuel Filter Differential Pressure Switch Circuit - Test".
STOP
Caterpillar Information System:
C27 and C32 Engines for Caterpillar Built Machines E362 Engine Overspeed
C27 and C32 Generator Set Engines E361 High Engine Coolant Temperature
C27 and C32 Engines for Caterpillar Built Machines E194 High Exhaust Temperature
C15 and C18 Engines for Caterpillar Built Machines CID 1756 FMI 06 Start Aid Indicator short to ground
C15 and C18 Engines for Caterpillar Built Machines CID 1756 FMI 05 Start Aid Indicator open circuit
C9 Engine for Caterpillar Built Machines CID 1422 FMI 12 Front Engine Control Module malfunction
C9 Engine for Caterpillar Built Machines CID 1422 FMI 09 Unable to communicate with Front Engine ECM
C9 Engine for Caterpillar Built Machines CID 1273 FMI 09 Unable to Communicate with Chassis Control Module
C9 Engine for Caterpillar Built Machines CID 0717 FMI 02 Remote Throttle Switch Incorrect Inputs
C9 Engine for Caterpillar Built Machines CID 0267 FMI 02 Incorrect Engine Shutdown Switch inputs
C-9 Engine for TK711, TK721, TK722, TK732, TK741, TK751, and TK752 Track Feller Bunchers CID 0262 FMI 03 5 Volt Sensor DC Power Supply short to +batt
C9 Engine for Caterpillar Built Machines CID 0265 FMI 02 User Defined Shutdown Input data erratic
AP-1055D and BG-2455D Asphalt Pavers Machine Systems Piston Pump (Left Propel) - Install
AP-1055D and BG-2455D Asphalt Pavers Machine Systems Footshaft - Install
3054E Engines for Caterpillar Built Machines Engine Speed - Check
AP-1055D and BG-2455D Asphalt Pavers Machine Systems Piston Pump (Auxiliary) - Remove
C15 and C18 Engines for Caterpillar Built Machines CID 0549 FMI 02 Incorrect Throttle Lock Switch inputs
AP500F Asphalt Paver Machine Systems Footshaft - Disassemble
AP-1055D and BG-2455D Asphalt Pavers Machine Systems Piston Pump (Auxiliary) - Install
AP500F Asphalt Paver Machine Systems Footshaft - Assemble
C15 and C18 Engines for Caterpillar Built Machines Electrical Power Supply Circuit - Test
AP-1055D and BG-2455D Asphalt Pavers Machine Systems Plates (Drag Pans) - Remove and Install
R2900G Load Haul Dump Braking System Pressure Switch (Brake Accumulator Oil)
988G Wheel Loader Power Train Output Transfer Gears - Assemble