Cummins ISB4.5 CM2150 Fault Code: 3572 PID: SPN: 4334 FMI: 4 Aftertreatment Diesel Exhaust Fluid Pressure Sensor - Voltage Below Normal Or Shorted To Low Source.

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Circuit Description
The aftertreatment diesel exhaust fluid controller provides a 5 volt supply and a ground to the aftertreatment diesel exhaust fluid pressure sensor. The pressure sensor provides a signal to the aftertreatment diesel exhaust fluid controller on the sensor signal circuit. This sensor signal voltage changes based on the aftertreatment diesel exhaust fluid pressure supplied by the dosing unit. The aftertreatment diesel exhaust fluid controller will detect a low signal voltage at low aftertreatment diesel exhaust fluid pressures, and high signal voltage at high aftertreatment diesel exhaust fluid pressures. The aftertreatment diesel exhaust fluid pressure sensor reading is communicated to the electronic control module (ECM) via the engine data link.

Component Location
The aftertreatment diesel exhaust fluid pressure sensor is internal to the aftertreatment diesel exhaust fluid dosing unit and can not be serviced separately.

Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position.

Conditions for Setting the Fault Codes
The aftertreatment diesel exhaust fluid controller detects that the aftertreatment diesel exhaust fluid pressure sensor signal voltage is less than a calibratible value for 1 second.

Action Taken When the Fault Code is Active
-The ECM illuminates the amber CHECK ENGINE lamp and/or the malfunction indicator lamp (MIL) immediately when the diagnostic runs and fails.
-An engine torque derate will be activated

Conditions for Clearing the Fault Code
-This fault code can not be cleared with INSITE™ electronic service tool.
-To validate the repair, start the engine and let it idle for 1 minute.
-The ECM will turn off the amber CHECK ENGINE lamp and/or MIL immediately after the diagnostic runs and passes.
-Use INSITE™ electronic service tool to verify the fault code is inactive.
-The inactive fault code will be cleared from the memory after 9600 hours of engine operation without a re-occurrence.

Possible Causes
-Signal wire shorted to ground
-Malfunctioning aftertreatment diesel exhaust fluid controller
-Malfunctioning aftertreatment diesel exhaust fluid controller harness.

Categories Cumminz, DTC TRUCKS, ISB4.5 CM2150Tags -, Aftertreatment, Below, CM2150, Code3572, Cummins, Diesel, Exhaust, Fault, Fluid, FMI4, ISB4.5, Low, Normal, or, PID, Pressure, Sensor, Shorted, Source., SPN4334, to, Voltage

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Cummins ISB4.5 CM2150 Fault Code: 3572 PID: SPN: 4334 FMI: 4 Aftertreatment Diesel Exhaust Fluid Pressure Sensor - Voltage Below Normal Or Shorted To Low Source. - EcuForce Truck (2024)

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