Replacing Diesel Filter on Peugeot Boxer (1.6 HDI PSA)

Required tools: T20 Torx, a flat screwdriver and a cross screwdriver, a 7 mm combination spanner for securing the pipe fittings, a 10 mm socket used to remove the battery holder, which is located in a tight space, and a new compatible diesel filter. A non-replaced diesel filter on PSA 1.6 HDi can cause various issues. It may trigger messages such as "pollution control system error" or error codes like P0087 or P0093. First, remove the turbo air intake, the air filter intake, and even the battery. You will also need to unscrew the brake fluid reservoir. A classic black silicone paste can also be useful, and of course, a plastic container is usually used to drain the oil. Procedure: first, remove the upper cover. The filter is underneath, so first, remove the turbo intake. Remove the secondary air intake pipe by gently twisting it. Unscrew the metal clamps at the top and bottom of the pipe. Once loosened, proceed to pull the pipe from the turbine. Be careful with the white clips that hold the head's exhaust pipe; here, the hot gases produced by the engine are recirculated into the intake, so ensure the clips are lifted before pulling. Now unscrew the Torx from the reservoir and then remove the primary air intake pipe. Remove the battery starting from the cover box. Now unscrew the battery holder located next to the battery at the bottom. You can now extract the battery; remember to disconnect the connector. You can see where it connects to the airbox. This pipe brings pressurised air to the brake servo, if necessary. Now seal the primary air intake with black silicone. It takes at least an hour to dry, so allow the proper time before starting the engine. Then push it back into the air filter site, reconnect the pneumatic brake pipe. Now we can restore the turbo intake and the battery. Remove the orange gasket to clean it from oil; otherwise, it won't seal properly on the turbine and will slip off. Also, clean the intake with a towel and the turbine intake as well. Tighten the securing elements. Now the battery and pipes are all in place. Also remember to clean the EGR valve once a year. It is recommended to replace the diesel filter again every 40,000 or 50,000 miles.