The AF sensor is also known as the NOx sensor control unit for emissions control and is used before the catalytic converter (catalytic converter).
Replacing your 851879101 5WK96699A sensor probe with our unit will save you a fortune, solve your NOX problems, and get you back in compliance with environmental emissions laws.
Types of Common Errors:
2B08 Engine electronics: nitrogen oxide sensor, heater
30E9 Nitrous oxide catalyst, aging
2EAE No message from nitrogen oxide sensor 1
2AEC Nitrogen Oxide Sensor Self-Diagnosis
2AF0; 2B05 nitric oxide sensor, heating
2AF2; 2B06; 2B09 Nitric Oxide Probe, Linear Lambda
2AF4; 2B07; 2B0A Electrical NOx sensor
2AF6; 2AFB; 2B0B Nitric Oxide Sensor, Binary Lambda
2AF9 NOx sensor, NOx signal: coast mode control
2EAE NOx sensor missing message (timeout)
30D6 nitric oxide sensor, plausibility
30D8 NOx sensor, sensor damaged
30DA NOx sensor, warm-up time
30DC nitric oxide sensor, heating
30DE NOx Sensor – Lambda Sensor Before Catalytic Converter, NOx Sensor Korrelation 30E0, Offset Nitrogen Oxide Sensor
30E2, 30E4 nitrogen oxide sensor for boost testing, 30E6 nitrogen oxide sensor for aging, dynamics
25C200 Nitrogen oxide sensor after SCR catalyst, signal: open circuit
25C300 Nitrogen oxide sensor after SCR catalyst, signal: short circuit to ground or positive
2BC500 Nitrogen oxide sensor downstream of SCR catalyst, message: missing
2BC700 Nitrogen oxide sensor downstream of SCR catalyst, message: missing
BMW Part Numbers:
8 518 791 01
851879101
Continental Product Code:
5WK9 6699A
5WK96699A
Most compatible OEM part numbers
13628589846 858984601 5WK96699C
13628576471 857647101 5WK96699B
13628511666 851166601 5WK96699
13628509721
13627812530
BMW Compatibility List:
1 Series F20 LCI Facelift 2014 2015 2016 2017 2018 2019
1 Series F21 LCI Facelift 2014 2015 2016 2017 2018 2019
2 Series F22 LCI Restyling 2016 2017 2018 2019
2 Series F23 LCI Restyling 2016 2017 2018 2019
3 Series E90 LCI Restyling 2008 2009 2010 2011
3 Series F30 2011 2012 2013 2014
3 Series F31 2011 2012 2013 2014
3 Series F30 LCI Restyling 2015 2016 2017 2018
3 Series F31 LCI Restyling 2015 2016 2017 2018
5 Series F07 GT LCI Restyling 2012 2013 2014 2015 2016 2017
5 Series F10 LCI Restyling 2013 2014 2015 2016
5 Series F11 LCI Restyling 2013 2014 2015 2016
7 Series F01 F02 LCI Restyling 2013 2014 2015
Series X F25 X3 Restyling 2013 2014 2015 2016
X Series F15 X5 2013 2014 2015 2016 2017 2018 xDrive30d diesel
X Series F16 X6 2014 2015 2016 2017 2018 2019This list is not complete, the NOx sensor may also fit other car models.
