FCCC MB 2016–2022 — technical service bulletin
Bulletin FL974 · NHTSA communication 10251200 · issued Feb 20, 2024
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2022
model years
60
vehicle entries
Official summary
Revised Emissions Recall: Cummins DEF Sensor Shortage. REVISION: Some vehicles formerly in Group F have been moved to Group G and have been assigned a new part number as specified in Table 1. An SRT for 'Calibration Code Only: Update or Confirm' has been added, as shown in Table 2, to be used when a new DEF header is not required. There have been some other minor changes to the work instructions and SRT times.
Vehicles covered
- 2019 FCCC MB
- 2016 FCCC MT45
- 2017 FCCC MT45
- 2018 FCCC MT45
- 2019 FCCC MT45
- 2020 FCCC MT45
- 2021 FCCC MT45
- 2022 FCCC MT45
- 2016 FCCC MT55
- 2017 FCCC MT55
- 2018 FCCC MT55
- 2019 FCCC MT55
- 2020 FCCC MT55
- 2021 FCCC MT55
- 2022 FCCC MT55
- 2018 FCCC S2C
- 2019 FCCC S2C
- 2020 FCCC S2C
- 2021 FCCC S2C
- 2022 FCCC S2C
- 2017 FCCC S2RV
- 2018 FCCC S2RV
- 2019 FCCC S2RV
- 2020 FCCC S2RV
- 2021 FCCC S2RV
- 2022 FCCC S2RV
- 2019 FCCC Xba
- 2020 FCCC Xba
- 2016 FCCC XBP
- 2017 FCCC XBP
- 2018 FCCC XBP
- 2019 FCCC XBP
- 2020 FCCC XBP
- 2021 FCCC XBP
- 2016 FCCC XBR
- 2017 FCCC XBR
- 2018 FCCC XBR
- 2019 FCCC XBR
- 2020 FCCC XBR
- 2021 FCCC XBR
- 2016 FCCC XBS
- 2017 FCCC XBS
- 2018 FCCC XBS
- 2019 FCCC XBS
- 2020 FCCC XBS
- 2021 FCCC XBS
- 2022 FCCC XBS
- 2016 FCCC XCL
- 2017 FCCC XCL
- 2018 FCCC XCL
- 2019 FCCC XCL
- 2020 FCCC XCL
- 2021 FCCC XCL
- 2016 FCCC XCM
- 2017 FCCC XCM
- 2018 FCCC XCM
- 2019 FCCC XCM
- 2020 FCCC XCM
- 2021 FCCC XCM
- 2022 FCCC XCM
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.