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  1. BMW Diesel Owners & Enthusiasts
    I am working on a 2011 e90 335D that has been giving me a hard time with diagnosis. Car has 80k miles I am getting codes: 40D4 Exhaust gas recirculation controller, position control 46F2 deNOx System Function 4D16 SCR System Efficiency I have completed the Ista SCR system test numerous times...
  2. X5 E70 (2007 - 2013)
    Hi all, I've seen many posts about the P20EE code but I haven't seen many posts about my particular issue with it. I have a 2012 X5 35d with ~65k miles on it that is showing the P20EE code along with 4D16, which I understand is the NOx sensor, catalyst, bank 1- efficiency below threshold code...
  3. BMW Diesel Owners & Enthusiasts
    Looking for some help from the bimmerfest community! the BMW dealer recommended that I replace my DPF Filters which will cost $6300 (if serviced at dealership)! Below are the notes from the technician. Can you guys/gals help me out with some advice? I read online that cleaning the filters first...
  4. X5 E70 (2007 - 2013)
    Replaced NOx Sensors & DEF Active Tank Temp Senso, Fault Codes 4D16, 4D32, 452A, 474C Purpose: Addressed/resolved a few fault codes, initial report-back. Audience: Primarily geared towards folks just starting to address these issues. Many folks and threads on this forum helped me LOT - thank...
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