WalterSmith

The first error is a problem with the humidity and air quality sensor. . Its purpose is to detect harmful substances in the air being drawn into the cabin (e.g. high levels of NOx, exhaust fumes etc.). The purpose of this sensor is to switch the air dampers to a closed circuit if harmful substances are detected in the intake air. Like all components, it can also break down. Nothing lasts forever. Before you start replacing it, check the contacts and wires first. Second case the possibilities are many : A break in the power supply to the module that set the code A break in the ground to the module that set the code A break in the CAN bus + circuit Short circuit to ground in any CAN C bus circuit. Diagnosis of this diagnostic trouble code (DTC) is based on the symptoms of the vehicle Check more codes Control module wiring harness is open or shorted Poor electrical connection of the control module circuit Loose, corroded, bent or short-circuited CAN bus wiring harness Low voltage due to defective battery or corroded terminals Defective or short-circuited control module Control module has lost memory and will not restart due to temporary loss of power. May require reprogramming or ping command to start

Diagnose the car (EGR, injectors, turbo, leaks on the IC), verify your driving style, fuel quality (DPF is sensitive to bio additives) and you will stop having DPF and stink problems. Again, it is possible that the DPF has unfortunately become clogged especially if it has not been replaced before.

When the heater fails, a typical symptom is insufficient or inoperative heating. If, after the heating temperature has been set to maximum and the blower is working properly, cold air is blowing all the time, it can be assumed that the heater is not giving off heat to the flowing air. Remember that the heater may also be dirty, and you will only need to clean it and not replace it with a new one.

There could be several causes. They may not have poured enough during the change. Maybe the engine is taking on oil. Maybe you have a leaking turbo. You'd have to check a few things, yes it's fortune telling I'm betting on ring problems though. Are you able to check your turbo yourself? (Unscrew the rubber pipe behind the turbo and see if there is oil in it).