SEGMENT EDGE-LEFT HAND 4T9123 - Caterpillar

System Operation Description:Table 1 lists the diagnostic codes that relate to the combustion air system.
Table 1
Diagnostic Trouble Codes That Relate to the Combustion Air System
J1939 Code Description Comments
3245-15 Exhaust Gas Temperature 3 : High - Least Severe (1) The temperature that is detected by the flame boundary temperature sensor is too high. The code is logged.
3474-31 Aftertreatment #1 : Loss of Combustion This code indicates that the ARD has stopped generating heat 20 times during an active regeneration.
The ARD is disabled. The Clean Gas Induction System (CGI) is turned off. Engine power is derated 30 percent.
Other diagnostic trouble codes may indicate the system that caused the loss of combustion to occur. The codes are listed in the troubleshooting procedure.
The code must be cleared with the "Reset All" button on the active diagnostics screen in Caterpillar Electronic Technician (ET). If an active regeneration is initiated with the forced regeneration switch on the dash, the Engine Control Module (ECM) clears this code automatically.
3487-7 Aftertreatment #1 Air Pressure Control : Not Responding Properly The boost pressure is okay. The oil pressure is okay. The