The aftertreatment diesel particulate filter differential pressure sensor measures pressure across the aftertreatment diesel particulate filter and outlet pressure.
The aftertreatment diesel particulate filter differential/outlet pressure sensor is mounted on the aftertreatment diesel particulate filter.
Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.
Disconnect the vehicle batteries. Refer to the OEM service manual.
Disconnect the differential pressure sensor tubes from the sensor by releasing the quick connect locking tab and pulling the tubes off of the sensor.
Squeeze the locking tab and pull the connector apart to disconnect the pressure sensor wiring harness connector.
Inspect the hoses for cuts or holes. Replace the hoses if damage is found.
Inspect the inside of the hoses for plugging or soot accumulation. If plugging or soot accumulation is present, the tubes must be cleaned. Refer to Procedure 011-041 in Section 11.
Inspect the differential/outlet pressure sensor electrical connector for damage.
Inspect the differential/outlet pressure sensor for cracks or body damage.
Replace the differential/outlet pressure sensor if damage is found.
Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.
Connect the aftertreatment diesel particulate filter differential/outlet pressure sensor to the OEM harness.
WARNING 
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