Quote:
Originally Posted by madbim
I understand the cat would be covered, but it seems the dealer thinks the NOX sensors should be replaced next. I'm just trying to confirm this is a valid next step, and diag myself.
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I have heard that there is a good chance its not the sensors even when it says it is.
local guy wanted to buy my nox sensors but when he swapped the sensors with someone else with an x5 it still gave the code. can't remember what his codes where but it pointed to the nox sensors.
its confusing because the cat apparently has its own code that should go off but apparently it did not.
there could also be corrosion on the harness going to the nox, or not sure if this is possible but some said a bad battery could cause it.
so who really knows!