M-Class (W166) Produced 2012-2015

KNOx Sensor issue

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Old May 9, 2023 | 01:35 AM
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uph
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ML350 Bluetec
KNOx Sensor issue

Bought a 2012 ML350 Bluetec with 90000KM. The engine light goes on nearly every 600km. Sometimes it goes off again on its on. Other times I use my Diagnostic iCarsoft MB V3.0 to seset it.
The message I get is: NOx Sensor Performance - Slow Response High to Low Bank 1 Sensor 1.
I assume that it is an intermitted fault, but can anybody give me some advice.
Thanks UPH
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Old May 9, 2023 | 09:31 AM
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From: Toronto, ON
86 190E 2.3, 2014 ML350 Bluetec
Get into the dealership ASAP for this: https://mbworld.org/forums/m-class-w...nt-canada.html

Deadline is May 30th
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Old May 9, 2023 | 10:12 AM
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This place is a joke.
Get rid of the car ASAP. The om642 is a junk engine with a junk emissions (adblue) system. It will never be reliable and you will continue to dump money into it. This is just the beginning of your problems. If you like the car go buy the gas version they are inherently more reliable and cost less to maintain.
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