Ford F-250 SD 2013–2019 — technical service bulletin
Bulletin 21N02 · NHTSA communication 10189757 · issued Mar 17, 2021
Technical service bulletin
communication type
Equipment
component
2013–2019
model years
21
vehicle entries
Official summary
Certain 2013-2016 Model Year F-Series Super Duty 6.7L Diesel and 2015-2019 Model Year Transit 3.2L Diesel Vehicles â  Front NOx Sensor Warranty Extension In all of the affected vehicles, the onboard diagnostic (OBD) system initially contained a software error that prevented illumination of the malfunction indicator light (MIL) if a certain fault was present in the front NOx sensor. Since the PCM was reprogrammed under Emissions Recall 21E01, the OBD system is now able to detect this NOx sensor fault previously masked by the software error and can light the MIL if this fault is found to be p
Vehicles covered
- 2013 Ford F-250 SD
- 2014 Ford F-250 SD
- 2015 Ford F-250 SD
- 2016 Ford F-250 SD
- 2013 Ford F-350 SD
- 2014 Ford F-350 SD
- 2015 Ford F-350 SD
- 2016 Ford F-350 SD
- 2013 Ford F-450 SD
- 2014 Ford F-450 SD
- 2015 Ford F-450 SD
- 2016 Ford F-450 SD
- 2013 Ford F-550 SD
- 2014 Ford F-550 SD
- 2015 Ford F-550 SD
- 2016 Ford F-550 SD
- 2015 Ford Transit
- 2016 Ford Transit
- 2017 Ford Transit
- 2018 Ford Transit
- 2019 Ford Transit
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.