Ford F-150 2016–2020 — technical service bulletin
Bulletin TSB 21-2336 · NHTSA communication 10201907 · issued Sep 28, 2021
Technical service bulletin
communication type
Power Train
component
2016–2020
model years
23
vehicle entries
Official summary
Some 2018-2020 F-150 vehicles built on or before 1-Apr-2020 equipped with a 3.0L diesel engine, 2017-2019 F-Super Duty vehicles built on or before 30-Oct-2019 equipped with a 6.7L engine and 2016-2019 F-650/F-750 vehicles built on or before 30-Oct-2019 equipped with a 6.7L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P21DD, P20BA. P20B9, P204C, P208A, P208B, P208C, P203B, P205B, P21CD and/or U02A2 in the powertrain control module (PCM). This may be due to water intrusion within connectors C3613 and/or C4851/C3610 on the reductant harne
Vehicles covered
- 2018 Ford F-150
- 2019 Ford F-150
- 2020 Ford F-150
- 2017 Ford F-250 SD
- 2018 Ford F-250 SD
- 2019 Ford F-250 SD
- 2017 Ford F-350 SD
- 2018 Ford F-350 SD
- 2019 Ford F-350 SD
- 2017 Ford F-450 SD
- 2018 Ford F-450 SD
- 2019 Ford F-450 SD
- 2017 Ford F-550 SD
- 2018 Ford F-550 SD
- 2019 Ford F-550 SD
- 2016 Ford F-650 SD
- 2017 Ford F-650 SD
- 2018 Ford F-650 SD
- 2019 Ford F-650 SD
- 2016 Ford F-750 SD
- 2017 Ford F-750 SD
- 2018 Ford F-750 SD
- 2019 Ford F-750 SD
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.