15123 Mercruiser OIL SEAL, CRANKSHAFT (REAR)

Table 1
Diagnostic Trouble Codes for SCR Warning System Problem
J1939 Code Description Notes
5246-15 Aftertreatment SCR Operator Inducement Severity : High - least severe (1) This code is a Level 1 inducement associated with an emission activated fault.
The Emissions System Malfunction Lamp is on.
5246-16 Aftertreatment SCR Operator Inducement Severity : High - moderate severity (2) This code is a Level 2 inducement associated with an emission activated fault.
The Emissions System Malfunction Lamp is on and the Action Lamp is flashing.
The engine is derated.
5246-0 Aftertreatment SCR Operator Inducement Severity : High - most severe (3) This code is a Level 3 inducement associated with an emission activated fault.
The Emissions System Malfunction lamp is on, the Action lamp is flashing, and the warning horn may sound.
The engine is derated.
The engine may stop. Associated Codes
Troubleshoot any associated diagnostic codes listed in Table 2 that are present. Refer to "Inducement Type" in Table 2 for the correct Inducement table.
Table 2
Associated Codes
J1939 Code Code Description Inducement Type
27–3 EGR Control Actuator Position Sensor: Voltage Above Normal NRS Inducement
27–4 EGR Control Actuator Position Sensor: Voltage Below Normal NRS Inducement
411–3 Engine EGR Delta Pressure: Voltage Above Normal NRS Inducement
411–4 Engine EGR Delta Pressure: Voltage Below Normal NRS Inducement
1235-9 J1939 Network #3 : Abnormal Update Rate DEF Quality/Tampering/Dosing Interruption
1235-14 J1939 Network #3 : Special Instruction DEF Quality/Tampering/Dosing Interruption
1761-1 Catalyst Tank Level : Low - most severe (3) DEF Tank Level Inducement
1761-12 Catalyst Tank Level : Failure DEF Tank Level Inducement
1761-17 Catalyst Tank Level : Low - least severe (1) DEF Tank Level Inducement
1761-18 Catalyst Tank Level : Low - moderate severity (2) DEF Tank Level Inducement
2659-7 Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate : Not Responding Properly NRS Inducement
2791-5 Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Below Normal NRS Inducement
2791–7 Engine Exhaust Gas Recirculation 1 Valve 1 Control 1: Not Responding Properly NRS Inducement
3031-12 Catalyst Tank Temperature : High : Failure DEF Quality/Tampering/Dosing Interruption
3031-16 Catalyst Tank Temperature : High - moderate severity (2) DEF Quality/Tampering/Dosing Interruption
3031-18 Catalyst Tank Temperature : Low - moderate severity DEF Quality/Tampering/Dosing Interruption
3216-12 Aftertreatment #1 Intake NOx : Failure DEF Quality/Tampering/Dosing Interruption
3217-16 Aftertreatment #1 Intake O2 : High - moderate severity (2) DEF Quality/Tampering/Dosing Interruption
3226-12 Aftertreatment #1 Outlet NOx : Failure DEF Quality/Tampering/Dosing Interruption
3227-16 Aftertreatment #1 Outlet O2 : High - moderate severity (2) DEF Quality/Tampering/Dosing Interruption
3358–3 Engine Exhaust Gas Recirculation 1 Intake Pressure: Voltage Above Normal NRS Inducement
3358–4 Engine Exhaust Gas Recirculation 1 Intake Pressure: Voltage Below Normal NRS Inducement
3361-5 Catalyst Dosing Unit : Current Below Normal DEF Quality/Tampering/Dosing Interruption
3361-6 Catalyst Dosing Unit : Current Above Normal DEF Quality/Tampering/Dosing Interruption
3361-7 Catalyst Dosing Unit : Not Responding Properly DEF Quality/Tampering/Dosing Interruption
3363-5 Catalyst Tank Heater : Current Below Normal DEF Quality/Tampering/Dosing Interruption
3363-6 Catalyst Tank Heater : Current Above Normal DEF Quality/Tampering/Dosing Interruption
3509–3 Sensor Supply Voltage 1 : Voltage Above Normal DEF Quality/Tampering/Dosing Interruption
3509–4 Sensor Supply Voltage 1 : Voltage Below Normal DEF Quality/Tampering/Dosing Interruption
3510–3 Sensor Supply Voltage 2 : Voltage Above Normal DEF Quality/Tampering/Dosing Interruption
3510–4 Sensor Supply Voltage 2 : Voltage Below Normal DEF Quality/Tampering/Dosing Interruption
3516-2 Aftertreatment #1 DEF Concentration : Erratic, Intermittent, or Incorrect DEF Quality/Tampering/Dosing Interruption
3516-12 Aftertreatment #1 DEF Concentration : Failure DEF Quality/Tampering/Dosing Interruption
3516-18 Aftertreatment 1 Diesel Exhaust Fluid Concentration : Low - moderate severity (2) DEF Quality/Tampering/Dosing Interruption
4334-3 Aftertreatment #1 SCR Dosing Reagent Absolute Pressure : Voltage Above Normal DEF Quality/Tampering/Dosing Interruption
4334-4 Aftertreatment #1 SCR Dosing Reagent Absolute Pressure : Voltage Below Normal DEF Quality/Tampering/Dosing Interruption
4334–7 Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure: Not Responding Properly DEF Quality/Tampering/Dosing Interruption
4334-16 Aftertreatment #1 SCR Dosing Reagent Absolute Pressure : High - moderate severity (2) DEF Quality/Tampering/Dosing Interruption
4334-18 Aftertreatment #1 SCR Dosing Reagent Absolute Pressure : Low - moderate severity (2) DEF Quality/Tampering/Dosing Interruption
4337–8 Aftertreatment #1 DEF Doser #1 Temperature : Abnormal Frequency, Pulse Width, or Period DEF Quality/Tampering/Do