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Have you heard of this? CES light comes on nox code they reset twice new code something to do with low air flow to EGR have not seen ticket yet they tell me new "brain box" any ideas?
Ok so new engine management computer 25 miles later ces light on again. Any help ideas anything would be appreciated.
Csmd250
Do a forum search for "CEL". There were a number of issues related to cold weather ops and CEL as well as some guys who had it on during the warmer months. I think there was a TSB on it as well. All related to the NOx sensor.
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