What is a NOx sensor Mercedes?

The NOx sensor from Mercedes-Benz supplies up-to-date data on exhaust gas aftertreatment and so plays a valuable role in ensuring that exhaust gas emissions are not exceeded. It is also a vital component for ensuring low fuel consumption and optimum engine performance.

Are there any fault codes for the NoX sensor?

I’ve got a some fault codes indicating a dodgy NOX sensor. Two relate to the upstream sensor, and one relates to the downstream one. A search on this site suggests the upstream one is more often replaced.

What causes a Bluetec NoX sensor to fail?

For info, the old (faulty) one was ref. A0009052900 and the new A0009053603. Blackburn. Lancashire Generally main Two major reasons a nox sensor fails is contamination eg soot.

What causes NOx sensors faulty before and after SCR?

So i was advised that most likely NOx sensors became faulty before and after SCR catalyzer . Well anyway replaced those two NOx expesive sensors with not luck, check light comes back = ( after restart. Please help. What causes it to fail? Replaced and no error codes,and then after engine restarted error comes back on

How do you unscrew a NoX sensor?

You’re referring to the O2 sensors. Try the forward NOX sensor. (The back one looks not much easier). It’s not just unscrewing the sensor from the exhaust, it’s the loom and control unit that has to be threaded behind the heat shields to their moorings.

How can I tell if my ABS sensor is a problem?

When a fault code is set, the ABS/DSC warning light will illuminate. You will have to scan the module and read the fault codes to determine which speed sensor is the problem. Keep in mind, other problems can illuminate the ABS/DSC warning light, be sure to scan and read fault codes before replacing parts.

When did Mercedes replace the NoX sensor in their car?

Then in April 2018, Mercedes-Benz Markham had replaced two NOX sensors in my car and costed me about 3K for the same problem. However, it didn’t fix the…

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