Jerry Posted October 18 Share Posted October 18 I have a NV300 from 2018 with 145 dci engine. Have the fault message on the display "Check anti pollution system" When I connect with OBD2 it says -fault value from Nox sensor "B" - I have changed the sensor and removed the faulty code but it still comes back. I can start the engine 3-4 times before it get back. Are there several Nox sensors or what does the "B" stand for? Any ideas? Quote Link to comment Share on other sites More sharing options...
Trevor Posted Friday at 01:42 PM Share Posted Friday at 01:42 PM The NOX sensor B is measuring against NOX sensor A (B is usually behind A in the exhaust system) and if there is an exhaust leak then this could cause the issue Quote Link to comment Share on other sites More sharing options...
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