Inspection After Removal

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

To avoid the risk of injury to eyes and skin, when using caustic solutions, solvents, acids, or alkaline materials follow the manufacturer's recommendations for use and wear appropriate eye protection and protective clothing. Some of these materials are also flammable. To avoid risk of fire or burns, never smoke or allow sparks or flames (such as pilot lights, electrical switches, or welding equipment) in the work area. Avoid spilling onto a hot exhaust manifold which can cause a fire.
When using compressed air for cleaning, to avoid the risk of personal injury from flying debris and dirt:
- Do not exceed 207 kPa (2.111 kg/cm ² , 30 psi).
- Wear appropriate eye protection and protective clothing including gloves.

Inspect the inside of the tube for any debris or saturation.
Dry the tube with compressed air.
Check the tube for cracks and thread damage. Replace the tube if damage is found.

NOTE: To make sure of proper function of the drain holes and condensate drainage in the pressure sensor and related tubing, the DPF device must be mounted such that the tubes integral to the pressure sensor are oriented downward. Horizontally-mounted devices must be installed such that the axis of the housing and the pressure sensor are within ±10 degrees of vertical.

Inspect the inside of the threaded bosses on the canister.
Clean debris with a lint-free cloth from the inside of the threaded bosses, while being careful not to damage the threads.

CAUTION: To avoid possible damage to the Diesel Particulate Filter (DPF), do not allow debris to enter the filter canister while cleaning the threaded bosses.