Скачать или смотреть Mercedes W205 C220d NOX sensor replacement

Replacing the NOX sensor on my dads 2015 Mercedes C220d
This is a W205 chassis car, with the 2.1 OM651 engine and approximately 85,000 miles.

The engine management light appeared before an MOT was due and reading the faults it showed the following codes:

P220F77 – The heater of NOx sensor 2 (cylinder bank 1) has an electrical fault. The commanded position cannot be reached.
P229E11 – NOx sensor 2 (cylinder bank 1) has an electrical fault. There is a short circuit to ground.
P229E13 – NOx sensor 2 (cylinder bank 1) has an electrical fault. There is an open circuit.
P22A122 – NOx sensor 2 (cylinder bank 1) has a short circuit to positive. The signal amplitude is greater than the maximum amplitude.
P229F92 – NOx sensor 2 (cylinder bank 1) has a malfunction. The function or the instruction is faulty.

These indicated a fault with the NOX sensor. In 2017 when the car was still under warranty it had a new NOX sensor fitted by mercedes. This time with some more years and miles on it we decided to chance an aftermarket item from ebay.
If you choose to fit a genuine sensor the procedure is the exact same but the price is higher. The choice is yours to make.

There are some who choose to go down the route of removing the adblue system entirely and having the car remapped to ignore all of that but i prefer to keep this stuff running to comply with emissions regulations.

Overall with a lift the job is actually quite easy. There was no need to use the diagnostic equipment to code in the new part. It has been about 4 months since this sensor was fitted and it was worked perfectly.

If you have any questions feel free to send a message to the facebook page for this channel on:
  / pc2cv