SEAL-FACE 8T8158 - Caterpillar

System Operation Description:Use this procedure if the following event code is active. Refer to Troubleshooting, "Event Codes" for information about event codes.Note: Refer to Troubleshooting, "Cat ET Service Features" for information about service features.
Table 1
Diagnostic Trouble Codes    
CDL Code     J1939 Code     Code Description
(code descriptions may vary)     Comments    
E1156 (1)     3609-15     High DPF #1 Intake Pressure     The code is logged.    
Table 2
Associated Diagnostic Trouble Codes    
E995    
E997    
3719-16    
3719-0    
3720-15    
3720-16    
Table 3
Troubleshooting Test Steps    Values    Results    
1. Check for Associated Diagnostic Trouble Codes
A. Establish communication between the Cat® Electronic Technician (ET) and the engine Electronic Control Module (ECM).
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Determine if any of the codes in Table 2 are present.
   
Associated Diagnostic Codes
   
Result: An associated diagnostic trouble code is not present.
Proceed to Test Step 2.
Result: An associated diagnostic trouble code is present.
Repair: Refer to Troubleshooting, "Diagnostic Trouble Codes" in order to troubleshoot the associated diagnostic code.
If the problem is not resolved, proceed to Test Step 2.
   
2. Ash Service Maintenance
A. Determine the most recent cleaning of the Diesel Particulate Filter (DPF).
   
Cleaning Interval
    Result: The diesel particulate filter was cleaned within the last 5000 hours.
Proceed to Test Step 3.
Result: The diesel particulate filter was not cleaned within the last 5000 hours.
Proceed to Test Step 4.
   
3. Check for Contamination
A. Reset all active codes and clear all logged codes by cycling the keyswitch to the Off position.
B. Remove the DPF.
C. Check for contamination on the face of the DPF and the Diesel Oxidation Catalyst (DOC).
   
Contamination
    Result: There is oil, fuel, or coolant on the DPF and/or the DOC.
Repair: Perform the following procedure:
1. Clean the DPF. Refer to Special Instruction, REHS5045, "Diesel Particulate Filter (DPF) Maintenance on Tier 4 Products Equipped with a Diesel Particulate Filter (DPF)". Refer to Systems Operation and Testing and Adjusting, "Diesel