p220900 nox sensor fault

[Volkswerks]

Hi all having trouble with the 220900 nox fault on my 2020 T6.1 I've fitted a new sensor but the fault has come back i have checked the 12v,earths and the bus lines the check out fine. I've read on here that it is linked to the addblue is there anything to look out for as there is not much info out there on this subject Thanks

 

[Dundee_Kev]

Did you fit a genuine sensor? Aftermarket ones sometimes cause issues

 

[Volkswerks]

Did you fit a genuine sensor? Aftermarket ones sometimes cause issues

Hi yes a bosch one from Deutsche Parts the code comes back after a while when it has run a bit

 

[Dundee_Kev]

Most genuine nox sensors are usually made by continental, but I haven't replaced a VW for sometime. It's always mercs we're replacing or Renault.

Is it the same code your getting or a different one but for the same sensor? @mmi will be your guy to fully assist you

 

[Volkswerks]

Most genuine nox sensors are usually made by continental, but I haven't replaced a VW for sometime. It's always mercs we're replacing or Renault.

Is it the same code your getting or a different one but for the same sensor? @mmi will be your guy to fully assist you

same code as before, im now going to check the wiring as it comes up under the passenger seat and i have replaced the double with a single just going to rule out that the wire has got damaged.

 

[mmi]

What engine - the code please?
What's the part number of the original sensor?

 

[Volkswerks]

What engine - the code please?
What's the part number of the original sensor?

Hi ill get it in the morning as I've gone out for the day now @mmi Thanks

 

[Volkswerks]

@mmi hi this is the pt number of the nox sensor 04L907805CA I think the engine code is either CXHE or CHHC I can confirm tomorrow Thanks

 

[mmi]

P2209 00 - Sense Circuit for Heater for NOx Sensor 1 Bank 1 - Implausible Signal

04L907805CA

The part number refers to sensor 2 - so possibly have been working on wrong sensor - the (8) below?


906-015

 

[Volkswerks]

@mmi thats probably what I’ve done worked on the wrong sensor what location number is it for sensor1 bank1? Thanks

 

[mmi]

@mmi thats probably what I’ve done worked on the wrong sensor what location number is it for sensor1 bank1? Thanks

Sorry, not sure what you mean - the sensor 1 is the part number in 7 in the picture.
Or, the actual location?

 

[Volkswerks]

Location just wanted that confirming that number 7 the one I’m going to have to change Thanks