Quote:
Originally Posted by Dr. Anthony
You're absolutely right. I've run out of ideas so before it gets too crazy, I'm going to have a friend's indy shop take a look at it for me this afternoon.
Also, the code (3 codes) are all referring to the name nox sensor.
they are:
46B4: NOX Sensor before denox cat plausability nox.
4BB3: Nox sensor before denox cat- plausibility nox
4b6a: Nox sensor before denox cat - Plausibility
to me, I'm reading it as the nox sensor before the cat has died.
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Quote:
Originally Posted by bawareca
"Plausibility" means that the readings of the sensor are out of the range that is stored in the DDE's maps. If someone can rust test schedules in ISTA that wive a tons of information about the problems and tips to help pinpoint the problem. I am quite sure it is not the sensor(s) itself.
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I had a 4BB2:
SES/CEL: Code 4BB2....Anyone else? - Bimmerfest - BMW Forums
http://www.xoutpost.com/846433-post20.html
Lemoned that car in 2011.
'Code' does not equal 'part'. These cars use the values from the sensor and how they respond after the DDE adjusts other control parameters to trap errors. It may be the sensor is bad, but far more likely it just isnt responding the way engineering said it should (and the DDE expects). You can have a clogged SCR orifice, bad metering value, bad SCR cat, etc, etc. You need to run test plans.
Good luck. This stuff is a PITA.
(Ive just posted my crap to give you a sense of a bad story- lets hope yours is more straightforward.)