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Nox sensor

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Old Jun 10, 2020 | 02:48 PM
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chrisdean
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Joined: Apr 2014
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From: England
W205 C200 AMG Line Premium
Nox sensor
I'm getting Nox sensors warnings on my OBD2 reader and the EML illuminated on the dash. P2200 refers to the front sensor as far as I know. I've got a 2014 C200 petrol model and I'm wondering whether I get access to the sensor from the top of the engine or do I get to it from underneath the car. Is it worth trying to clean the sensor with a carb cleaner or similar or should I bite the bullet and get a relpacement? Thanks in anticipation.
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