67 w205 c200

Diyer

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W205 c 200 67
DFF83DB2-17AD-4C2A-8C1D-FE1338F348F7.jpeg 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

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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
 
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Diyer

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C271B0A7-BAD7-4311-A969-9F1A55134E8B.jpeg

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
 
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Diyer

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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

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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 ?
 
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Diyer

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

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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

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1998/2001 W210 E280 x2 SOLD 2004 W211 E55 SOLD, 2014 E63 Biturbo SOLD .S204 C180K
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)
 

AMGeed

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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.
 


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