67 w205 c200

[Diyer]

Hello
I’ve got a 67 plate c200 w205 c class sedan and it’s done 8500 miles I had a fault code of p2200
It says it’s the box sensor are these codes reliable or could it be a different problem further up the chain

also are there any diagrams for cars, like manuals for fixing them!
Thanks

 

[John Laidlaw]

welcome !
Nox sensors are a common failing, so this could be right- a Mercedes independent with STAR will be able to confirm and fix once this crisis is over

 

[Diyer]

I bought the carsoft and got this. Was told to get this software as better apparently.
Seems to suggest the same thing. mid there a diagram to show me where both the sensors are located and what one it actually is.
thank you

 

[Diyer]

Does anyone know where this bank 1 nox sensor is placed. I’ve been told apparently after I fit it I will need a car updat on the software

 

[Wighty]

Does anyone know where this bank 1 nox sensor is placed. I’ve been told apparently after I fit it I will need a car updat on the software

Are you still in warranty on the car ?

 

[Diyer]

No I’m not. So looking to do it myself.
Then take it and pay to get the software upgraded

 

[Diyer]

I’ve seen one on the exhaust and it’s one bit and electrical block so not a problem. I’m a heating engineer by trade but I have manuals to view parts!
That’s where I’m struggling in locating the fecker that needs swapping!

 

[AMGeed]

I’ve seen one on the exhaust and it’s one bit and electrical block so not a problem. I’m a heating engineer by trade but I have manuals to view parts!
That’s where I’m struggling in locating the fecker that needs swapping!

Take a look behind the resonator towards the rear of the car.
The Nox sensor is Part# 250 in the diagram below.
https://nemigaparts.com/cat_spares/epc/mercedes/1/fg/205442/c42/49/180/

Don't confuse it with the Temperature sensor (Part #220)

 

[Diyer]

Take a look behind the resonator towards the rear of the car.
The Nox sensor is Part# 250 in the diagram below.
https://nemigaparts.com/cat_spares/epc/mercedes/1/fg/205442/c42/49/180/

Don't confuse it with the Temperature sensor (Part #220)

lovely thank you. Is the the bank 1 sensor!?

 

[AMGeed]

lovely thank you. Is the the bank 1 sensor!?

With a 4 cylinder in line engine you only have one "Bank". Bank 1 is where cylinder #1 is located.
With a V engine, bank 1 or 2 refers to which side of the block the sensor is located.