CONTROL AR-HYDRAULIC 3838258 - Caterpillar

Which Generate This Code:The ECM detects the following condition:
The oil filter differential pressure is greater than 200 kPa (29 psi) for 240 seconds.
The jacket water coolant temperature is greater than 63 °C (145 °F).
The engine has reached low idle for at least 12 seconds.System Response:The ECM will log the event. The warning for the oil filter differential pressure is determined by subtracting the filtered oil pressure from the unfiltered oil pressure. The warning becomes inactive when the differential oil pressure decreases below 173 kPa (25 psi) for 240 seconds or if the coolant temperature falls below 60 °C (140 °F).
None
There may be a problem with the lubrication system.
There may be a problem with the filtered temperature sensor or the unfiltered temperature sensor.Test Step 1. Check for Diagnostic Codes.
Connect ET to the service tool connector.
Turn the keyswitch to the ON position. The engine should be OFF.
Check for any Active Diagnostic Codes or Logged Diagnostic Codes.Expected Result:There should be no diagnostic codes that are present.Results:
OK - There are no diagnostic codes that are present. Proceed to Test Step 2.
Not OK - There are diagnostic codes that are present.Repair: Repair the diagnostic codes that are present. Refer to the appropriate topic in the "Troubleshooting With a Diagnostic Code" section of this manual. Ensure that the repair eliminates the problem. Stop.Test Step 2. Perform a Check of the Lubrication System.
Perform a check of the lubrication system. Refer to Troubleshooting, "Low Engine Oil Pressure" for possible causes.Expected Result:There are no problems with the lubrication system.Results:
OK - There may be an intermittent problem.Repair: Monitor the operation of the engine. Repair the problem. Ensure that the repair eliminates the problem. Stop.
Not OK - There are problems with the lubrication system.Repair: Repair the problem. Ensure that the repair eliminates the problem. Stop.