Cummins ISB6.7 CM2350 (2013-17) Fault Code: 3547 PID: SID 115 SPN: 4096 FMI: 31 Aftertreatment Diesel Exhaust Fluid Tank Empty- Condition Exists
Cummins ISB6.7 CM2350 (2013-17) Fault Code: 3547 PID: SID 115 SPN: 4096 FMI: 31 Aftertreatment Diesel Exhaust Fluid Tank Empty- Condition Exists
Circuit Description
The aftertreatment diesel exhaust fluid level sensor is used to monitor the diesel exhaust fluid level inside the diesel exhaust fluid tank.
Component Location
The aftertreatment diesel exhaust fluid tank level sensor is located in the aftertreatment diesel exhaust fluid tank. Location of the tank and level sensor is OEM dependent. Refer to the OEM service manual.
Conditions for Running the Diagnostics
The diagnostic runs continuously when the following conditions are met:
Keyswitch is in the ON position or when the engine is running.
1)Ambient temperature is above -20?C [-4?F].
2)Vehicle altitude change is less than 305 m [1000 ft] in 1 hour.
Conditions for Setting the Fault Codes
The diesel exhaust fluid tank was empty and the dosing unit was unable to prime.
Action Taken When the Fault Code is Active
There are two levels of action taken by the ECM when this fault code is active:
Level 1: Action taken when the diesel exhaust fluid tank is empty:
1)The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.
2)The Diesel Exhaust Fluid Lamp will be flashing.
3)Diesel exhaust fluid injection into the aftertreatment system is disabled.
4)Engine torque will be severely reduced.
Level 2: Action taken when the diesel exhaust fluid tank is empty and engine shutdown or extended idle.
1)The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.
2)The Diesel Exhaust Fluid Lamp will be flashing.
3)Engine torque will be severely reduced.
4)Vehicle speed will be limited to 8 km [5 mi] per hour.
Conditions for Clearing the Fault Code
1)To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
2)The fault code status displayed by INSITE? electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3)The ECM will turn off the diesel exhaust fluid lamp immediately after the diagnostic runs and passes.
4)The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
5)The Reset All Faults command in INSITE? electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.
Shop Talk
This fault code indicates that the aftertreatment diesel exhaust fluid tank is empty and needs refilled immediately.
Possible Causes:
1) ECM calibration
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