C3.4B Engines SCR Warning System Problem Caterpillar

Inducement strategies are control actions required by EPA/ARB Tier 4 and EU Stage IV regulations. An inducement strategy ensures prompt correction of various failures in the engine NOx emission control system. The strategy requires actions to limit engine performance and defines required the following indications when the control actions are imposed:

Lamps
Messages
Audible alarms

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Table 1
Diagnostic Trouble Codes for SCR Warning System Problem
J1939 Code	Description	Notes
5245-15	Aftertreatment Selective Catalytic Reduction Operator Inducement Active : High - most severe (3)	This code is a Level 1 inducement associated with low Diesel Exhaust Fluid (DEF) level. The Emissions System Malfunction Lamp is on. The low DEF level lamp is on. Refer to Troubleshooting, "DEF Tank Level Is Low"
5245-16	Aftertreatment Selective Catalytic Reduction Operator Inducement Active : High - moderate severity (2)	This code is a Level 2 inducement associated with low DEF level. The Emissions System Malfunction Lamp is flashing and the low DEF level lamp is on. The engine is derated. Refer to Troubleshooting, "DEF Tank Level Is Low"
5245-0	Aftertreatment Selective Catalytic Reduction Operator Inducement Active : High - most severe (3)	This code is a Level 3 inducement associated with low DEF level. The Emissions System Malfunction Lamp is flashing and the low DEF level lamp is flashing. The engine is derated. Refer to Troubleshooting, "DEF Tank Level Is Low"
5246-15	Aftertreatment SCR Operator Inducement Severity : High - least severe (1)	This code is a Level 1 inducement associated with an emission activated fault. At least one diagnostic code is active which may cause the engine to operate outside of emissions. The Emissions System Malfunction Lamp is on. The warning lamp may come on or may flash depending on the primary active diagnostic code. The engine will be derated unless the fault is related to the DEF quality.
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 engine has been run for 2 hours with an active operator inducement or 50 minutes if the fault is related to DEF quality. The Emissions System Malfunction Lamp is flashing. The warning lamp may come on or may flash depending on the primary active diagnostic code. 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 engine has been run for 3.5 hours with an active operator inducement. The Emissions System Malfunction lamp is flashing, and the stop lamp is on. The engine is derated. The engine speed is limited to low idle.
5826-15	Emission Control System 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.
5826-16	Emission Control System 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.
520246–14	Emission Control System Inducement Information : Special Instruction	This diagnostic code is available in electronic service tool versions 2015C or later. This diagnostic code is for informational purposes only. Sometimes, when the active and/or logged diagnostic codes are cleared but the inducement diagnostic codes remain, the 520246–14 code provides a list of all diagnostic codes that can trigger the active inducement code. This diagnostic code is only displayed when a diagnostic code that triggers the inducement strategy is active or has previously been active. In version 2016C or later of the electronic service tool, this diagnostic code will be recorded in the logged diagnostic code screen. The ECM must be powered off for at least 2 minutes then powered back on to update the list of diagnostic codes. This diagnostic code will remain visible as an active diagnostic code in the electronic service tool for 40 hours after all associated diagnostic codes have been cleared. The lamps that will come on depend on the active inducement diagnostic code. The engine derates depend on the active inducement diagnostic code.
520246–31	Emissions Control System Inducement Information	This diagnostic code is available in electronic service tool versions 2015C or later. This diagnostic code is for informational purposes only. Sometimes when the active and/or logged diagnostic codes are cleared but the inducement diagnostic codes remain, the 520246–31 diagnostic code provides a list of all diagnostic codes that can trigger the active inducement code. This diagnostic code is only displayed when a diagnostic code that triggers the inducement strategy is active or has previously been active. In version 2016C or later of the electronic service tool, this diagnostic code will be recorded in the logged diagnostic code screen. This diagnostic code will remain visible as an active diagnostic code in the electronic service tool for 40 hours after all associated diagnostic codes have been cleared. The lamps that will come on depend on the active inducement diagnostic code. The engine derates depend on the active inducement diagnostic code.

Note: The inducement diagnostic codes are triggered when a diagnostic code that may affect the emissions of the engine is active and the engine is started. The inducement diagnostic codes will clear after the fault that affects the emissions of the engine is repaired. The inducement diagnostic codes will remain active until the engine is restarted after a repair. If the repair is made when the engine is running, the inducement diagnostic code will clear immediately.

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.

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Table 2
Associated Codes
J1939 Code	Code Description	Inducement Type
27-3	EGR #1 Valve Position : Voltage Above Normal	EGR System Inducement
27-4	EGR #1 Valve Position : Voltage Below Normal	EGR System Inducement
102-3	Engine Intake Manifold #1 Pressure : Voltage Above Normal	Electrical System Inducement
102-4	Engine Intake Manifold #1 Pressure : Voltage Below Normal	Electrical System Inducement
102-20	Engine Intake Manifold #1 Pressure : Data Drifted High	EGR System Inducement
102-21	Engine Intake Manifold #1 Pressure : Data Drifted Low	EGR System Inducement
105-3	Engine Intake Manifold #1 Temperature : Voltage Above Normal	Electrical System Inducement
105-4	Engine Intake Manifold #1 Temperature : Voltage Below Normal	Electrical System Inducement
157-0	Engine Injector Metering Rail #1 Pressure : High - most severe (3)	EGR System Inducement
157-2	Engine Injector Metering Rail #1 Pressure : Erratic, Intermittent, or Incorrect	EGR System Inducement
157-16	Engine Injector Metering Rail #1 Pressure : High - moderate severity (2)	EGR System Inducement
157-18	Engine Injector Metering Rail #1 Pressure : Low - moderate severity (2)	EGR System Inducement
168-3	Battery Potential / Power Input #1 : Voltage Above Normal	Electrical System Inducement
168-4	Battery Potential / Power Input #1 : Voltage Below Normal	Electrical System Inducement
1076-5	Engine Fuel Injection Pump Fuel Control Valve : Current Below Normal	EGR System Inducement
1076-6	Engine Fuel Injection Pump Fuel Control Valve : Current Above Normal	EGR System Inducement
1127-16	Engine Turbocharger 1 Boost Pressure : High - moderate severity (2)	EGR System Inducement
1127-18	Engine Turbocharger 1 Boost Pressure : Low - moderate severity (2)	EGR System Inducement
1188-5	Engine Turbocharger 1 Wastegate Drive : Current Below Normal	EGR System Inducement
1209-3	Engine Exhaust Gas Pressure : Voltage Above Normal	EGR System Inducement
1209-4	Engine Exhaust Gas Pressure : Voltage Below Normal	EGR System Inducement
1231-9	J1939 Network #2 : Abnormal Update Rate	Electrical System Inducement
1239-0	Engine Fuel Leakage 1 : High - most severe (3)	EGR System Inducement
1761-19	Aftertreatment #1 DEF Tank Level : Data Error	Electrical System Inducement
2659-2	Engine Exhaust Gas Recirculation 1 Mass Flow Rate : Erratic, Intermittent, or Incorrect	EGR System Inducement
2791-5	Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Below Normal	EGR System Inducement
2791-6	Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Above Normal	EGR System Inducement
2791-7	Engine Exhaust Gas Recirculation (EGR) Valve Control : Not responding Properly	EGR System Inducement
2840-12	ECU Instance : Failure	Electrical System Inducement
3031-12	Aftertreatment #1 DEF Tank Temperature : Failure	Electrical System Inducement
3031-16	Aftertreatment #1 DEF Tank Temperature : High - moderate severity (2)	Electrical System Inducement
3216-2	Aftertreatment #1 Intake NOx : Erratic, Intermittent, or Incorrect	SCR System Inducement
3216-5	Aftertreatment #1 Intake NOx : Current Below Normal	SCR System Inducement
3216-6	Aftertreatment #1 Intake NOx : Current Above Normal	SCR System Inducement
3216-10	Aftertreatment #1 Intake NOx : Abnormal Rate of Change	SCR System Inducement
3216-19	Aftertreatment #1 Intake NOx : Data Error	Electrical System Inducement
3226-2	Aftertreatment #1 Outlet NOx : Erratic, Intermittent, or Incorrect	SCR System Inducement
3226-5	Aftertreatment #1 Outlet NOx : Current Below Normal	SCR System Inducement
3226-6	Aftertreatment #1 Outlet NOx : Current Above Normal	SCR System Inducement
3226-10	Aftertreatment #1 Outlet NOx : Abnormal Rate of Change	SCR System Inducement
3226-19	Aftertreatment #1 Outlet NOx : Data Error	Electrical System Inducement
3362-7	Aftertreatment #1 DEF Dosing Unit Input Lines : Not Responding Properly	SCR System Inducement
3363-5	Aftertreatment #1 DEF Tank Heater : Current Below Normal	Electrical System Inducement
3363-6	Aftertreatment #1 DEF Tank Heater : Current Above Normal	Electrical System Inducement
3509-2	Sensor Supply Voltage 1 : Erratic, Intermittent, or Incorrect	Electrical System Inducement
3516-2	Aftertreatment #1 DEF Concentration : Erratic, Intermittent, or Incorrect	DEF Quality Inducement
3516-14	Aftertreatment #1 DEF Concentration : Special Instruction	DEF Quality Inducement
3521-19	Aftertreatment #1 DEF Property : Data Error	Electrical System Inducement
4332-7	Aftertreatment #1 SCR System State : Not Responding Properly	Electrical System Inducement
4334-0	Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure : High - most severe (3)	Electrical System Inducement
4334-7	Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure : Not Responding Properly	SCR System Inducement
4334-10	Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure : Abnormal Rate of Change	SCR System Inducement
4334-16	Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure : High - moderate severity (2)	SCR System Inducement
4334-18	Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure : Low - moderate severity (2)	SCR System Inducement
4354-5	Aftertreatment #1 DEF Line Heater #1 : Current Below Normal	Electrical System Inducement
4354-6	Aftertreatment #1 DEF Line Heater #1 : Current Above Normal	Electrical System Inducement
4355-5	Aftertreatment #1 DEF Line Heater #2 : Current Below Normal	Electrical System Inducement
4355-6	Aftertreatment #1 DEF Line Heater #2 : Current Above Normal	Electrical System Inducement
4360-3	Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Above Normal	Electrical System Inducement
4360-4	Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Below Normal	Electrical System Inducement
4363-3	Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Voltage Above Normal	Electrical System Inducement
4363-4	Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Voltage Below Normal	Electrical System Inducement
4364-17	Aftertreatment #1 SCR Catalyst Conversion Efficiency : Low - least severe (1)	SCR System Inducement
4377-2	Aftertreatment 1 Outlet NH3 : Erratic, Intermittent, or Incorrect	Electrical System Inducement
4377-4	Aftertreatment 1 Outlet NH3 : Voltage Below Normal	Electrical System Inducement
4377-7	Aftertreatment 1 Outlet NH3 : Not Responding Properly	Electrical System Inducement
4377-19	Aftertreatment 1 Outlet NH3 : Data Error	Electrical System Inducement
4383-5	Aftertreatment 1 Outlet NH3 Gas Sensor Heater Control : Current Below Normal	Electrical System Inducement
4383-6	Aftertreatment 1 Outlet NH3 Gas Sensor Heater Control : Current Above Normal	Electrical System Inducement
5024-5	Aftertreatment 1 Intake NOx Sensor Heater Ratio : Current Below Normal	SCR System Inducement
5024-6	Aftertreatment 1 Intake NOx Sensor Heater Ratio : Current Above Normal	SCR System Inducement
5031-5	Aftertreatment 1 Outlet NOx Sensor Heater Ratio : Current Below Normal	SCR System Inducement
5031-6	Aftertreatment 1 Outlet NOx Sensor Heater Ratio : Current Above Normal	SCR System Inducement
5394-3	Aftertreatment Diesel Exhaust Fluid Dosing Valve : Voltage Above Normal	Electrical System Inducement
5394-4	Aftertreatment Diesel Exhaust Fluid Dosing Valve : Voltage Below Normal	Electrical System Inducement
5394-5	Aftertreatment Diesel Exhaust Fluid Dosing Valve : Current Below Normal	Electrical System Inducement
5394-6	Aftertreatment Diesel Exhaust Fluid Dosing Valve : Current Above Normal	Electrical System Inducement
5419-7	Engine Throttle Actuator #1 : Not Responding Properly	EGR System Inducement
5435-5	Aftertreatment #1 DEF Pump State : Current Below Normal	Electrical System Inducement
5435-6	Aftertreatment #1 DEF Pump State : Current Above Normal	Electrical System Inducement
5571-7	High Pressure Common Rail Fuel Pressure Relief Valve : Not Responding Properly	EGR System Inducement
5571-16	High Pressure Common Rail Fuel Pressure Relief Valve : High - moderate severity (2)	EGR System Inducement
5706-5	Aftertreatment #1 Diesel Exhaust Fluid Pump Heater : Current Below Normal	Electrical System Inducement

Note: The version of the electronic service tool to be used during this troubleshooting process must be the latest available.

Note: Do not clear any active or logged diagnostic codes until the root cause of the code has been addressed. Clearing the diagnostic codes will make the troubleshooting process more difficult.

Note: Troubleshoot any diagnostic codes associated to EGR system inducements, electrical system inducements, low DEF level inducements, or DEF quality inducements before troubleshooting any diagnostic codes associated with SCR system inducements.

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Table 3
Troubleshooting Test Steps	Values	Results
1. Check for Associated Codes A. Ensure that the latest version of the electronic service tool is being used. B. Turn the keyswitch to the ON position. C. Turn the keyswitch to the OFF position for at least 2 minutes. D. Connect the electronic service tool to the diagnostic connector. E. Turn the keyswitch to the ON position. F. Use the electronic service tool to check for active diagnostic codes.	Associated Codes	Result: A 520246 diagnostic code and a 5246, a 5826, or a 5245 diagnostic code is active. Repair: Troubleshoot the diagnostic codes listed under the 520246 codes. Refer to Troubleshooting, Diagnostic Trouble Codes for the correct procedure. Refer to Table 2 to determine the type of inducement associated with the diagnostic codes. Perform the clearing procedure for each inducement as detailed below in the following order: 1. Electrical system inducement / Low DEF tank level inducement / DEF quality inducement 2. EGR system inducement 3. SCR system inducement Note: Do not attempt to clear the logged diagnostic codes until the root cause has been rectified. Proceed to Test Step 2.
2. Check for Active Diagnostic Codes A. Start the engine. B. Use the electronic service tool to check for active diagnostic codes.	Diagnostic codes	Result: There are no active 5246, 5826, or 5245 diagnostic codes. No new diagnostic codes have become active. Return the engine to service. Result: A 5246, 5826, or 5245 diagnostic code is active or new diagnostic codes have become active. Repair: Repeat this procedure from Test Step 1. If the fault persists, contact the Dealer Solutions Network (DSN).

Inducement for low-level DEF

Before engine operation, ensure that the DEF tank is full. Also, ensure that there is an adequate supply of DEF to refill the DEF tank.

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Table 4
DEF in Tank Level
Warning Indicator	Stop Indicator	DEF Low-Level Indicator	Emission Malfunction Indicator	DEF in Tank Level	Engine Power	Time	Comment	Action
OFF	OFF	OFF	OFF	Greater than 20 percent	Full Power	-	Normal Operation	None
OFF	OFF	On Solid	OFF	Less than 20 Percent	Full Power	-	Low DEF Indicator Active	Stop Engine and Fill DEF Tank
ON Solid	OFF	ON Solid	ON Solid	Less than Ten Percent	Full Power	-	Level 1 Indicators Active
ON Flashing Slowly	OFF	On Solid	ON Flashing Slowly	Less than 5 Percent	Engine will Start to be Derated	40 minute Derate Timer Starts.	A Level 2 Inducement is Active
ON Flashing Fast	ON Solid	ON Flashing Slow	ON Flashing Fast	Empty Tank	Derate to engine Power	30 minute derate timer starts	A Level 3 inducement is Active
ON Flashing Fast	ON Solid	ON Flashing Slow	ON Flashing Fast	Empty Tank	Engine will Only Operate at Low Idle.	30 minute derate timer starts	A Level 3 Inducement is Active

Clearing Inducements for Low DEF Level

Refilling the DEF tank to a level greater than 22 percent will clear the inducement diagnostic code and restore full engine power immediately.

Refer to Troubleshooting, "DEF Tank Level Is Low".

Note: After the DEF Tank has been refilled, or if the DEF level sensor has been disconnected, turn the keyswitch to the OFF position for 2 minutes. Turn the keyswitch back to the ON position to register the new DEF level.

DEF Quality Inducements

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Table 5
Inducement for Poor DEF Quality
Warning Indicator	Stop Indicator	DEF Quality Indicator	Emission Malfunction Indicator	Engine Power	Time	Comment	Action
OFF	OFF	OFF	OFF	Full Power	-	Normal Operation	None
On Solid	OFF	On Solid	On Solid	Full Power	Start of 50 Minute Timer	DEF Quality Out of Range Level 1 Inducement is Active	Stop Engine and Check DEF Quality. Refer to Systems Operation Testing and Adjusting, "Diesel Exhaust fluid Quality - Test" for More Information.
ON Flashing Slowly	OFF	ON Solid	ON Flashing Slowly	Start of Engine Derate	Start of 40 Minute Derate Ramp	A Level 2 Inducement is Active
ON Flashing Fast	ON Solid	ON Solid	ON Flashing Fast	Full Engine Derate. Low Idle (RPM) Only	At 210 Minutes	A Level 3 Inducement is Active

Clearing DEF Quality Inducements

Perform the following steps to clear DEF quality inducements:

Turn the keyswitch to the OFF position for 2 minutes.
Rectify the cause of the DEF quality inducement. Refer to Troubleshooting, "DEF Concentration Is Incorrect".
Turn the keyswitch to the ON position and wait for 10 minutes.
Connect to the electronic service tool.
Check that the DEF quality indicates "Proper" and the DEF concentration is now between 30 percent and 35 percent.
Check that the diagnostic codes are no longer active. The 520246 will remain visible as a logged diagnostic code in the electronic service tool.
Use the electronic service tool to clear all logged diagnostic codes. The 520246 will remain visible as a logged diagnostic code in the electronic service tool.

Electrical System Inducements

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Table 6
Electrical System Inducements
Warning Indicator	Stop Indicator	Emission Malfunction Indicator	Engine Power	Time	Comment	Action
OFF	OFF	OFF	Full Power	-	Normal Operation	None
ON Solid or Slow Flashing ⁽¹⁾	OFF	ON Solid	Start of Engine Power Derate	Timer Starts, 240 Minutes Before Full Derate	A Level 1 Inducement is Active	Troubleshoot any associated diagnostic codes. Refer to Troubleshooting, "Diagnostic Trouble Codes".
ON Flashing Slowly	OFF	ON Flashing Slowly	Derate to Engine Power and Speed		A Level 2 Inducement is Active
ON Flashing Fast	ON Solid	ON Flashing Fast	Full Engine Derate Low Idle (RPM) Only		A Level 3 Inducement is Active

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⁽¹⁾	Lamp mode will depend on the issue that has been identified.

Clearing Electrical System Inducements

Perform the following steps to clear electrical system inducements:

Troubleshoot the associated diagnostic codes and make any necessary repairs. Refer to Troubleshooting, "Diagnostic Trouble Codes" for the correct procedure.
Connect to the electronic service tool.
Check that the diagnostic codes are now logged and not active. Check that there are not any new active diagnostic codes. The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.
Start the engine and operate the engine at a high speed and load point until the following conditions are met:
- Engine coolant temperature is greater than 60° C (140° F)
- SCR intake temperature is greater than 200° C (392° F)
- "SCR System #1 State" indicates "Normal Dosing Operation"
- DEF dosing valve duty cycle is greater than 0 percent (this value will pulsate as the dosing valve is switched on and off)
Note: If the engine does not respond to a speed demand, the fault has not been repaired or another inducement diagnostic code is active.
Turn the keyswitch to the OFF position for 2 minutes.
Turn the keyswitch to the ON position. Ensure that there are no active diagnostic codes. The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.
Operate the engine at a high speed and load point until the following conditions are met: and check that no diagnostic codes become active.
- Engine coolant temperature is greater than 60° C (140° F)
- SCR intake temperature is greater than 200° C (392° F)
- "SCR System #1 State" indicates "Normal Dosing Operation"
- DEF dosing valve duty cycle is greater than 0 percent (this value will pulsate as the dosing valve is switched on and off)
Check that no diagnostic codes become active.
Stop the engine. Use the electronic service tool to clear all logged diagnostic codes. The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.

EGR System Inducements

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Table 7
EGR System Inducements
Warning Indicator	Stop Indicator	Emission Malfunction Indicator	Engine Power	Time	Comment	Action
OFF	OFF	OFF	Full Power	-	Normal Operation	None
ON Solid or Slow Flashing ⁽¹⁾	OFF	ON Solid	Start of Engine Derate	Timer Starts, 210 Minutes Before Full Derate	A Level 1 Inducement is Active	Troubleshoot any associated diagnostic codes. Refer to Troubleshooting, "Diagnostic Trouble Codes".
ON Flashing Slowly	OFF	ON Flashing Slowly	Derate to Engine Power and Speed	Timer Starts, 210 Minutes Before Full Derate	A Level 2 Inducement is Active

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⁽¹⁾	Lamp mode will depend on the issue that has been identified.

Clearing EGR System Inducements

Perform the following steps to clear EGR system inducements:

Troubleshoot the associated diagnostic codes and make any necessary repairs. Refer to Troubleshooting, "Diagnostic Trouble Codes" for the correct procedure.
Connect to the electronic service tool.
Check that the diagnostic codes are now logged and not active. Check that there are not any new active diagnostic codes. The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.
Start the engine and operate the engine at a high speed and load point until the following conditions are met:
- Engine coolant temperature is greater than 60° C (140° F)
- SCR intake temperature is greater than 200° C (392° F)
- "SCR System #1 State" indicates "Normal Dosing Operation"
- DEF dosing valve duty cycle is greater than 0 percent (this value will pulsate as the dosing valve is switched on and off)
Turn the keyswitch to the OFF position for 2 minutes.
Turn the keyswitch to the ON position. Ensure that there are no active diagnostic codes. The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.
Operate the engine at a high speed and load point and check that no diagnostic codes become active.
Stop the engine. Use the electronic service tool to clear all logged diagnostic codes.

SCR Systems Inducements

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Table 8
SCR System Inducements
Warning Indicator	Stop Indicator	Emission Malfunction Indicator	Engine Power	Time	Comment	Action
OFF	OFF	OFF	Full Power	-	Normal Operation	None
ON Solid or Slow Flashing ⁽¹⁾	OFF	ON Solid	Start of Engine Power Derate	Timer Starts, 240 Minutes Before Full Derate	A Level 1 Inducement is Active	Troubleshoot any associated diagnostic codes. Refer to Troubleshooting, "Diagnostic Trouble Codes".
ON Flashing Slowly	OFF	ON Flashing Slowly	Derate to Engine Power and Speed		A Level 2 Inducement is Active
ON Flashing Fast	ON Solid	ON Flashing Fast	Full Engine Derate Low Idle (RPM) Only		A Level 3 Inducement is Active

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⁽¹⁾	Lamp mode will depend on the issue that has been identified.

Clearing SCR System Inducements

Note: Troubleshoot and clear all the following types of inducements before performing the following procedure and troubleshooting SCR system inducements:

EGR System Inducement
Electrical System Inducement
Low DEF Level Inducement
DEF Quality Inducement

If diagnostic codes for any of the above inducements are active, the "Inducement Safe Harbor Mode" will not be activated.

Once all the above inducements have been cleared, perform the following steps to clear SCR system inducements:

Troubleshoot the associated diagnostic codes and make any necessary repairs. Refer to Troubleshooting, "Diagnostic Trouble Codes" for the correct procedure.
Initiate the "Emissions Safe Harbor Reset" by performing the following steps:
Note: These steps must be performed in the correct order to ensure that the "Inducement Safe Harbor Mode" is activated. "Emissions Safe Harbor Reset" in the electronic service tool must be completed prior to the keyswitch cycle which activates "Inducement Safe Harbor Mode".
1. Turn the keyswitch to the ON position.
2. Connect to the electronic service tool.
3. Navigate to the "Service" menu.
4. Select "Engine Emissions Operator Inducement Safe Harbor Reset" from the drop-down menu.
5. Click the "Reset" button.
Complete the following keyswitch cycle to enter "Inducement Safe Harbor Mode":
1. Turn the keyswitch to the OFF position for at least 2 minutes or until the "Wait to Disconnect" indicator (if equipped) switches off.
2. Turn the keyswitch to the ON position for 10 seconds.
3. Turn the keyswitch to the OFF position for 10 seconds
4. Turn the keyswitch to the ON position for 10 seconds.
5. Start the engine.
  Note: The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.
Operate the engine at a high speed and load point until the following conditions are met:
- Engine coolant temperature is greater than 60° C (140° F)
- SCR intake temperature is greater than 200° C (392° F)
- "SCR System #1 State" indicates "Normal Dosing Operation"
- DEF dosing valve duty cycle is greater than 0 percent (this value will pulsate as the dosing valve is switched on and off)
Check that the diagnostic codes are now logged and not active.
Check that there are no new active diagnostic codes. If there are still active diagnostic codes, repeat this procedure from Step 1.
Note: The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.
Turn the keyswitch to the OFF position for at least 2 minutes or until the "Wait to Disconnect" indicator (if equipped) switches off.
Turn the keyswitch to the ON position. Ensure that there are no active diagnostic codes. The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.
Operate the engine at a high speed and load point and check that no diagnostic codes become active.
Stop the engine. Turn the keyswitch to the ON position.
Use the electronic service tool to clear all logged diagnostic codes and return the engine to service. The 520246 diagnostic code will remain visible as a logged diagnostic code in the electronic service tool.

Emissions Safe Harbor Reset

The "Emissions Safe Harbor Reset" is to be done when the number of Inducement Safe Harbor mode restarts have been exhausted or the engine has been run in inducement for extended periods of time.

Perform the following steps to initiate the "Emissions Safe Harbor Reset":

Turn the keyswitch to the ON position.
Connect to the electronic service tool.
Click "Service" and select "Engine Emissions Operator Inducement Safe harbor Reset".
Click "Reset" at the bottom of the window.
Turn the keyswitch to the OFF position for at least 2 minutes or until the "Wait to Disconnect" indicator (if equipped) switches off.
Turn the keyswitch to the ON position.
Make the necessary repairs for the diagnostic code that was causing the inducement.

Inducement Safe Harbor Mode

The "Inducement Safe Harbor Mode" should be used when an intermittent fault causes a level 3 inducement and the engine speed has been limited to low idle.

Note: The "Inducement Safe Harbor Mode" can only be used within 4 hours of the first inducement error code.

Perform the following steps to initiate the "Inducement Safe Harbor Mode":

Note: Complete the "Emissions Safe Harbor Reset" in the electronic service tool before performing this procedure.

Turn the keyswitch to the OFF position for at least 2 minutes or until the "Wait to Disconnect" indicator (if equipped) switches off.
Turn the keyswitch to the ON position for 10 seconds.
Turn the keyswitch to the OFF position for 10 seconds.
Turn the keyswitch to the ON position for 10 seconds.
Start the engine.

Full power is restored for a maximum duration of 30 minutes if the inducement safe harbor mode restart has been successful.

Once initiated, the Inducement Safe Harbor Mode is terminated when the keyswitch is turned to the OFF position.

The inducement safe harbor mode restart time may be reduced if the engine has been run in inducement for too long.

The inducement safe harbor mode restart will be unavailable under the following conditions:

The engine has been run in inducement for longer than 3.5 hours (Refer to "Emissions Safe Harbor Reset")
When the inducement is caused by an electrical fault, low DEF tank level or poor DEF quality. (in this case, rectifying the fault will restore full power)