SUPPORT AS 3N4480 - Caterpillar

Table 1
Diagnostic Trouble Code for SCR Catalyst Has Incorrect Inlet Temperature
J1939 Codes CDL Codes Code Description
(code descriptions may vary) Comments
4360-16 E946 (2) Aftertreatment #1 SCR Catalyst Intake Gas Temperature : High - moderate severity (2) The aftertreatment SCR catalyst intake gas temperature sensor has detected that the SCR intake temperature is above the normal operating range.
4360-17 E947 (1) Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Low - least severe (1) This diagnostic code is only applicable to engines that have a Diesel Particulate Filter (DPF).
ECM detects that the SCR catalyst intake temperature is below the acceptable range.
The code is logged.
4360-18 E947 (2) Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Low - moderate severity (2) The aftertreatment SCR catalyst intake gas temperature sensor has detected that the SCR intake temperature is far below the normal operating range.
Follow the troubleshooting procedure in order to identify the root