W213 NOX sensor , bank 2 downstream

Page may contain affiliate links. Please see terms for details.

Hnerty

New Member
Joined
Dec 1, 2012
Messages
20
Car
Mercedes Benz E220D
Hello guys
Anyone knows the right part number for the NOx sensor bank 2
That would help me because it’s show that is faulty but the mechanic didn’t dismounted yet
Asked ten Mercedes Benz and they actually didn’t wanted to give me the right part number only the price (£532 )
Trying to find the genuine one but cheaper if possible
Thanks guys
 
Hello guys
Anyone knows the right part number for the NOx sensor bank 2
That would help me because it’s show that is faulty but the mechanic didn’t dismounted yet
Asked ten Mercedes Benz and they actually didn’t wanted to give me the right part number only the price (£532 )
Trying to find the genuine one but cheaper if possible
Thanks guys

Cheaper in the long run would be to have the Nox and ad blue system deleted from the ECU £300 one time payment.

Possibly A0009053603Screenshot_20230919-074019.png
 
Part numbers on these EPC will of been updated by now , it's a decent enough guide ,but dated .

Your Nox sensors will most likely be upto version 3 by now, along with the software programming.
 
For anyone considering adblue delete DONT!

I purchased an E400d, fuel economy was awful, checking another problem (tailgate) I found the SCR ecu unplugged! The car had had the adblue deleted. There are insurance implications and it does make the car illegal on the road.

I went to an ECU specialist, had the ecu returned to stock, then the EML illuminated! Quick check and NOX 2 was faulty, fitted a new one and it transformed the car! Much smoother and the MPG shot up!

Apparently the Nox sensor not only checks the emissions for adblue injection, it also allows the engine ecu to fine tune the fuel injection, without this information the ecu just delivers a basic fuel metering, it overfuels! That can later lead to DPF blocking / problems.

I cannot emphasise enough how it has really improved the car now being standard again, hope this helps anyone considering Adblue delete.
 
You should know the nox sensors don't last long.. its a flawed system with too many issues arising with various components!
 
I went to an ECU specialist, had the ecu returned to stock, then the EML illuminated! Quick check and NOX 2 was faulty, fitted a new one and it transformed the car! Much smoother and the MPG shot up!

Apparently the Nox sensor not only checks the emissions for adblue injection, it also allows the engine ecu to fine tune the fuel injection, without this information the ecu just delivers a basic fuel metering, it overfuels! That can later lead to DPF blocking / problems.
Interesting. I’ve had issues with NOx sensors since buying my C350 petrol new in 2012. I had them replaced three times in the first seven years then gave up when the EML came on yet again with a sensor fault code. I had the code mapped out instead.

Until the ECU tweak, the petrol consumption had been gradually increasing. But after the code was deleted it quickly returned to its best level. I was delighted of course.

But then a year or so later another NOx sensor code reared its ugly head. I didn’t have time to get that deleted too, so instead I just cancelled it with my cheap code reader. It came back on about a couple of weeks later, so I cancelled it again. After which it stayed quiet for about a year. The same process shut it up again.

During all that time with basically ignoring the faulty NOx sensor warnings, the car has run like a dream while returning amazing MPG for a big old V6 petrol engine. Over 40 mpg on a run is the norm now, and I don’t hang around.

If your theory is right about the ECU reacting to data returned from the NOx sensors, it reinforces my theory that the NOx sensors aren’t necessarily faulty when a code pops up. It may just be that the parameters set within the software are too stringent and not making allowances for minor blips. Once the “fault” has been notified, it won’t reset itself when everything returns to normal. I’ll be sticking with my manual resets every year or so from now on.
 

Users who are viewing this thread

Back
Top Bottom