COUPLING 2023081 - Caterpillar

Event E272Conditions Which Generate This Code:The Electronic Control Module (ECM) detects one of the following conditions:
The air inlet pressure for the left turbocharger is above the default value of 7 kPa (28 inches of H2O) for five seconds.
The air inlet pressure for the right turbocharger is above the default value of 7 kPa (28 inches of H2O) for five seconds.System Response:The ECM will log the event.Possible Performance Effect:
NoneTroubleshooting:
There may be a problem with the air inlet system.
There may be a problem with one of the air inlet pressure sensors.Test Step 1. Check for "ACTIVE" Diagnostic Codes
Start the Caterpillar Electronic Technician (ET).
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 are 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.STOPTest Step 2. Perform a Check of the Air Inlet System
Perform a check of the air inlet system. Refer to the Testing and Adjusting manual for information on inspecting the air inlet and exhaust system. Expected Result:There are no problems with the air inlet 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 is a problem with the air inlet system.Repair: Repair the problem. Ensure that the repair eliminates the problem.STOP