2021 MX13 pac car dpf and scr efficiency issues in need of egr tuneup

[mikkhh]

Well the box says nOx sensor, generic cardboard box, no logos or anything. Only one sticker with logo and part code. Other no logo bigger sensor written with words exchange, dealership wants back old sensor.

Looks like dealer ripped off again, truck goes into limp mode when under load and output nOx stays negative after some time.

Keep in mind that this truck had been serviced and repaired at dealership mostly, but nOx sensor was Hella brand one. As far as I am aware of those sensors are made to order by Continental/Vitesco... I have only bad and worse experiences using Hella branded sensors on passenger cars, terrible chinese junk that has been dead on arrival or has failed shortly.

Looks like the parts dealer is selling are just some crappy chinese junk. Or maybe just really unlucky and fault percentage is that high on nOx sensors, IMAP sensors.