L ENG OIL PRESS LOW
(Warning)

The red 'L ENG OIL PRESS LOW' warning CAS message indicates engine oil pressure is low.

• The dual channel oil pressure transducer supplies a continuous indication of the differential pressure between the oil supply and aft sump scavenge oil pressures. If oil pressure is low, the ECU will supply a low pressure warning signal. The oil pressure transducer is installed on the AGB oil tank assembly. The ECU supplies a conditioned DC voltage signal to the air frame for indication of oil pressure and an ARINC output for low-oil-pressure warning.
• In the event of low oil pressure, the ECU will provide a 'L ENG OIL PRESS LOW' warning signal. Catastrophic damage to the engine could occur if operation is continued.

• Low Oil Quantity
• Oil Filter
• Oil Pump
• Oil Pressure Transducer
• Associated Wiring

Advisory Wire/Service Bulletin:

• AW300-76-0243 - Electronic Control Unit (ECU) Water Ingress
• AW300-79-0324 - AS907 Oil Pump
• AW300-79-0401 - Oil Filler Cap Installation

Forum Articles/Infoservice/Newsletter: None

1. Interrogate the MDC as follows:

   1. On the cursor control panel, ensure the toggle switch is to the right and select Anti-Ice, ECS and Fuel buttons simultaneously. The MDC main menu should now be displayed on Display Unit #3.
   2. Using the joystick, select Current Faults (if the fault is active) or Aircraft History to research stored faults. From Aircraft History you can then select Fault Message History and locate the air condition fault logged.
   3. Select the MDC fault from the drop down below to provide additional information to assist in troubleshooting.
      Select an MDC Fault Code/Message:B3-006788 - NO FQGC OUTPUT TO RDC [FQGC]B3-006789 - INTERNAL FAULT [FQGC]B3-302115 - AIRCRAFT ARINC SYSTEM [AC ARINC SYS]B3-303508 - LOW OIL PRES EXCEEDANCE [L ENG EXCEEDANCE]