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PACCAR PX-9 CM2350 (2013-17) Fault Code:3547 PID:SID 115 SPN:4096 FMI:11 Aftertreatment Diesel Exhaust Fluid Tank Empty – Condition Exists

Description

Reason:
Aftertreatment Diesel Exhaust Fluid Tank Empty – Condition Exists. The diesel exhaust fluid tank is empty.

Effect:
Possible reduced engine performance

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:
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.

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) Inactive fault codes
2) Faulty ECM

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