C13 Engines for Caterpillar Built Machines Caterpillar

Use this procedure to troubleshoot a high differential pressure for the air inlet system. Use this procedure if one of the following event codes are active. Refer to Troubleshooting, "Event Codes" for information about event codes. Access the engine monitoring system on Caterpillar Electronic Technician (ET) to view the current trip points for these codes. For information on the engine monitoring system, refer to Troubleshooting, "Engine Monitoring System".

Table 1

Diagnostic Trouble Codes for a high differential pressure for the air inlet system
Code	Description (Code descriptions may vary)	System Response
E583 (1)	High Air Inlet #1 Differential Pressure	The air filter differential pressure is above the trip point pressure for the delay time. The code is logged.
E583 (2)	High Air Inlet #1 Differential Pressure	The air filter differential pressure is above the trip point pressure for the delay time. The code is logged. The engine power is derated.

Table 2

Troubleshooting Test Steps	Values	Results
1. Check the Air Filter Element A. Check the air intake system for plugged air filters or for damaged air filters. If the engine is equipped with an air intake precleaner, verify the proper operation of the air intake precleaner.	Plugged Air Filter	Result: The air filter is clogged. Repair: Clean or replace the air filter. Verify that the problem is resolved. Result: The air filter is not clogged. Proceed to Test Step 2.
2. Check the Air Inlet Piping A. Check the air inlet piping for damage or restrictions.	Damaged Air Inlet Piping	Result: The air inlet piping is damaged or has restrictions. Repair: Repair the piping or replace the piping. Verify that the problem is resolved. Result: The air inlet piping does not have damage or restrictions. Proceed to Test Step 3.
3. Check the Atmospheric Pressure Sensor, Turbocharger Compressor Inlet Pressure Sensors, and/or Sensor Circuits A. Use Cat ET to compare the value of the following parameters while the engine is off: 1. "Atmospheric Pressure" 2. "Turbocharger #1 Compressor Inlet Pressure (absolute)" The value for air filter restriction is a calculated value. Before Cat ET reports the status parameters for air filter restriction, the engine must be running for 3 minutes. Cat ET will report "Conditions Not Met" for these parameters prior to this delay time.	Damaged Sensors	Result: The sensors and sensor circuits are OK. Proceed to Test Step 4. Result: The sensors and sensor circuits are not OK. Repair: Repair or replace the sensors and/or sensor circuit. Verify that the problem is resolved.
4. Check for an Active 274-13 Diagnostic Trouble Code A. Establish communication between Cat® Electronic Technician (ET) and the Electronic Control Module (ECM) . Refer to Troubleshooting, "Electronic Service Tools", if necessary. B. Check for an active 274-13 code.	Active 274-13 Diagnostic Trouble Code	Result: A 274-13 diagnostic trouble code is active or logged. Repair: Troubleshoot an active 274-13 code. Refer to Troubleshooting, "Sensor Calibration Required - Test". Result: A 274-13 diagnostic trouble code is not active or logged. Proceed to Test Step 5.
5. Check the Enclosure Ventilation A. Check that the engine has been installed in an enclosure that is sufficiently ventilated.	Enclosure Ventilation	Result: The engine does not have sufficient ventilation. Repair: Repair the ventilation for the enclosure. Verify that the problem is resolved.

Contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).