Remove as follows:
1. Shut off engine and apply the parking brake, chock the wheels, and perform any other applicable safety
steps.
2. Disconnect the batteries.
3. Remove the bolt (2) securing the sensor box cover and remove the cover (1).
4. Disconnect the Diesel Particulate Filter (DPF) outlet pressure sensor electrical connector.
5. Loosen clamp on the DPF outlet pressure sensor hose (4) and slide it away from the outlet pressure
sensor.
6. Remove C-clip retaining the DPF outlet pressure sensor to the sensor box.
7. Remove the DPF outlet pressure sensor (3).
Installation of the Diesel Particulate Filter Outlet Pressure Sensor
1. Install the Diesel Particulate Filter (DPF) outlet pressure sensor (3) into the sensor box.
2. Install C-clip.
3. Install the DPF outlet pressure sensor hose clamp.
4. Connect the DPF outlet pressure sensor electrical connector.
5. Install the sensor box cover (1) and tighten mounting the bolt (2). Torque the bolt to 10 N·m (7 lb·ft).
6. Connect the batteries.
Removal of the Diesel Particulate Filter Outlet Temperature
Sensor
1. Shut off engine and apply the parking brake, chock the wheels, and perform any other applicable safety
steps.
2. Disconnect the batteries. Refer to Original Equipment Manufacturer (OEM) procedures.
3. Remove the bolt (2) securing the sensor box cover and remove the cover (1).
4. Disconnect the Diesel Particulate Filter (DPF) outlet temperature sensor electrical connector (3).
5. Remove the sensor harness pass-through (4) and cut the zip-tie to free the harness from the sensor box.
6. Remove the DPF outlet temperature sensor (5)
Installation of the Diesel Particulate Filter Outlet Temperature
Sensor
1. Apply high temperature anti-seize to the threads of the Diesel Particulate Filter (DPF) outlet temperature
sensor, but do not allow any to get on the sensor probe.
Note : DO NOT use excessive amounts, anti-seize will squeeze out during installation. DO NOT over tighten
sensors; damage to threads may occur.
2. Install the DPF outlet temperature sensor (5). Torque to 35 to 38 N·m (26 to 28 lb·ft).
3. Route the DPF outlet temperature sensor wiring harness through the pass-through (4) and zip-tie the pass
through.
4. Install the pass-through in the sensor box.
5. Connect the DPF outlet temperature sensor electrical connector (3).
6. Install the sensor box cover (2) and tighten the bolt (1). Torque the bolt to 10 N·m (7 lbft).
7. Connect the batteries. Refer to OEM procedures
Description and Operation of the Fuel Compensation Pressure
Sensor
The fuel compensation pressure sensor (1) monitors fuel pressure in the hydrocarbon doser block assembly to
properly deliver the correct amount of fuel from the electronic dosing valve.
Removal of the Fuel Compensation Pressure Sensor
Remove as follows:
1. Shut off engine and apply the parking brake, chock the wheels, and perform any other applicable safety
steps.
2. Disconnect the batteries.
3. Unplug the connector for the fuel compensation pressure sensor.
4. Remove the hydrocarbon doser block assembly, Refer to section “Removal of the Hydrocarbon Fuel Doser Block “
5. Loosen two bolts and remove the fuel compensation pressure sensor from the hydrocarbon doser block
assembly.
6. Remove the fuel compensation pressure sensor.