NOX sensor fault again! - MBWorld.org Forums

Aug 3, 2017 | 05:20 PM

Savo

Thread Starter

Newbie

Joined: Jan 2016

Posts: 7

Likes: 1

2015 E220 Bluetec coupe AMG sport

NOX sensor fault again!

Hello guys,
I have the 2015 E220 Bluetec coupe diesel.
My check engine light came on today and after checking it came out to be the NOX sensor (code P2201). The funny thing is that i have replaced that sensor last July. How is that even possible?

Im taking it to the dealership next week. Did anyone have the same thing? Any advice on what might causing the fault and what to tell the dealership to check to find the root of the problem?

Thank you

Last edited by Savo; Aug 3, 2017 at 05:22 PM.

Oct 17, 2018 | 07:33 AM

Stephen Chin

Newbie

Joined: Oct 2018

Posts: 1

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2015 Mercedes w212 e220 bluetec

My 2015 w212 E220 bluetec CEL came on with fault code P2201. There's 2 NOx sensor..one with a longer wiring and the other shorter. Which one did you replaced.

Feb 17, 2019 | 01:47 PM

RiverX

Junior Member

Joined: Feb 2019

Posts: 35

Likes: 10

From: Canada

ML350 Bluetec 2014

Hello, Guys,
My ML350 Bluetec 2014 engine light on with P2201, Bank1s2 and Bank1S3 related. Just wondering how much is this going to cost potentially? Why there is no Bank1S1?
What are the location of them? and only dealership can do this work properly since a teach-in process or a ECU training is required after the installation?
Thanks in advance for your answers!

Feb 18, 2019 | 06:08 AM

400ixl

Senior Member

Joined: Feb 2016

Posts: 468

Likes: 68

From: UK

E250 AMG Sport Convertible

Any indie with access to Star diagnostics can do this. I would recommend using genuine parts (or the OEM supplier if you can find that out).

Feb 18, 2019 | 08:10 PM

RiverX

Junior Member

Joined: Feb 2019

Posts: 35

Likes: 10

From: Canada

ML350 Bluetec 2014

Thanks, So you mean the Star diagnostics scanner/device can do the NOx sensor training, and also other relearn and train jobs?

Feb 19, 2019 | 02:26 AM

400ixl

Senior Member

Joined: Feb 2016

Posts: 468

Likes: 68

From: UK

E250 AMG Sport Convertible

Quote:

Originally Posted by RiverX

Thanks, So you mean the Star diagnostics scanner/device can do the NOx sensor training, and also other relearn and train jobs?

No such requirement for replacing that sensor that I know of. But yes, Star is what the main dealer would use.

Also assuming you mean one of the O2 sensors (pre and post catalytic converter) rather than NoX.

Last edited by 400ixl; Feb 19, 2019 at 03:51 AM.

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