GUIDE AS 4618824 - Caterpillar

Table 1
Diagnostic Trouble Codes
J1939 Code and Description CDL Code and Description
4334–20
Aftertreatment #1 DEF #1 Pressure (absolute) : Data Drifted High 3090–20
Aftertreatment #1 DEF Pressure Sensor : Data Drifted High
4334-21
Aftertreatment #1 DEF #1 Pressure (absolute) : Data Drifted Low 3090-21
Aftertreatment #1 DEF Pressure Sensor : Data Drifted Low
3361-5
Aftertreatment #1 DEF Dosing Unit : Current Below Normal 3821-5
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Current Below Normal
3361-6
Aftertreatment #1 DEF Dosing Unit : Current Above Normal 3821-6
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Current Above Normal
3516-12
Aftertreatment #1 DEF Concentration : Failure 3100-12
Aftertreatment #1 DEF Tank Fluid Quality Sensor : Failure
Table 2
Event Codes
J1939 Code and Description CDL Code and Description
5392-31
Aftertreatment Diesel Exhaust Fluid Dosing Unit Loss of Prime E1370 (2)
Aftertreatment #1 DEF Dosing Unit Loss of Prime
4334-18
Aftertreatment #1 DEF #1 Pressure (absolute) : Low - moderate severity (2) E931 (2)
Low Aftertreatment #1 DEF Pressure
4334-16
Aftertreatment #1 DEF #1 Pressure (absolute) : High - moderate severity (2) E930 (2)
High Aftertreatment #1 DEF Pressure
3516-16
Aftertreatment #1 DEF Concentration : High - moderate severity (2) E1365 (2)
High Aftertreatment #1 DEF Concentration
3516-18
Aftertreatment #1 DEF Concentration : Low - moderate severity (2) E1364 (2)
Low Aftertreatment #1 DEF Concentration
5246-15
Aftertreatment SCR Operator Inducement Severity : High - least severe (1) E1389 (1)
Aftertreatment #1 SCR Operator Inducement
5246-16
Aftertreatment SCR Operator Inducement Severity : High - moderate severity (2) E1389 (2)
Aftertreatment #1 SCR Operator Inducement
5246-0
Aftertreatment SCR Operator Inducement Severity : High - most severe (3) E1389 (3)
Aftertreatment #1 SCR Operator Inducement Ensure that DEF fluid conforms to specification ISO 22241 requirements and fluid handling, filling, and storage procedures are strictly followed.All transfer equipment and storage containers should be used exclusively for DEF and should not be reused for other fluids. For example coolants, fuels, oils, and windshield washer fluid.If contamination of the DEF system is suspected, refer to Troubleshooting, DEF Concentration is Incorrect. Ensure that the correct troubleshooting steps are followed. To test for contamination of the DEF tank, refer to Systems Operation Testing and Adjusting, Diesel Exhaust Fluid Quality - Test.If the DEF is contaminated, Caterpillar recommends that the DEF tank is flushed. Refer to Systems Operation Testing and Adjusting, Diesel Exhaust Fluid Tank - Flush for the correct procedure. Caterpillar recommends that the following components be replaced:
Manifold (DEF heater)
DEF injector and mounting
Diesel exhaust fluid pump
Diesel exhaust fluid linesRefer to Disassembly and Assembly for the correct procedures.