Service bulletin WI21-006
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10187444 |
| Published by NHTSA | 2021-02-26 |
| Manufacturer's number | WI21-006 |
| Manufacturer's date | 2021-02-15 |
| NHTSA component | ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT |
NHTSA's summary
Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system, Engine, Equipment and accessories
| FCCC S2G | 2015 to 2017 |
|---|---|
| FCCC S2G | 2019 to 2020 |
| FCCC S2RV | 2017 to 2021 |
| FCCC XBP | 2015 to 2021 |
| FCCC XBR | 2015 to 2021 |
| FCCC XBS | 2015 to 2021 |
| FCCC XCL | 2015 to 2021 |
| FCCC XCM | 2015 to 2021 |
| FCCC XCP | 2015 to 2021 |
| FCCC XCR | 2015 to 2021 |
| FCCC XCS | 2015 to 2021 |
| FCCC redundant S2G | 2018 |
| FREIGHTLINER 108SD | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| FREIGHTLINER 114SD | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| FREIGHTLINER 122SD | 2015 to 2021 |
| FREIGHTLINER BUSINESS CLASS M2 | 2015 to 2021 |
| FREIGHTLINER CASCADIA | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 |
| FREIGHTLINER ECONIC SD | 2019 to 2021 |
| THOMAS BUILT BUSES SAF-T-LINER C2 | 2015 to 2022 |
| WESTERN STAR 4700 | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| WESTERN STAR 4900 | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| WESTERN STAR 49X | 2021 |
| WESTERN STAR 5700 | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 |
| WESTERN STAR 6900 | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2026091 | 2026-03-03. Electrical |
|---|---|
| 22V338000 | 2022-05-16. EQUIPMENT:OTHER:LABELS |
| 22V101000 | 2022-02-22. SERVICE BRAKES; ELECTRICAL SYSTEM:SOFTWARE |
| 2021697 | 2021-11-12. Electrical |
| 21V882000 | 2021-11-12. ELECTRICAL SYSTEM:WIRING |
| 21V715000 | 2021-09-15. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM |
| 2021399 | 2021-06-25. Electrical |
| 21V481000 | 2021-06-25. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES |
| 2021172 | 2021-03-24. Electrical |
| 21V206000 | 2021-03-24. ELECTRICAL SYSTEM:WIRING |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| SS 3175-FTL | 2026-05-02. Other. Service Solution for Progressive Low Voltage Disconnect Parameter Update |
|---|---|
| SS 3146-FTL | 2026-05-02. Other. Service Solution for M2, 108SD, 114SD - Unable to Program Replacement Bulkhead Module - Certain Model Years |
| SS 3124-FTL | 2026-05-02. Other. Service Solution for Legacy M2 Bulkhead Module (BHM) Replacement and DiagnosticLink Issues |
| FleetCom 1_Solenoid | 2026-05-02. Other. Fleet Communications for solenoid issues |
| CXA 03_26_Surge Tank | 2026-04-02. Other. CX Advocate for discolored coolant surge tanks (24CSA-20) |
| FleetCom_ECU Faults | 2026-02-05. Other. Fleet Communications for Intermittent Connections and ECU Fault Codes |
| FleetCom_Heater Core | 2026-01-08. Other. Fleet Communications for Heater Core Plugging |
| FleetCom_ECU Faults | 2026-01-08. Other. Fleet Communications for Corrosion Protecton/Glyptal Application |
| TSB54-377-FTL | 2026-01-07. Service bulletin. Technical Service Bulletin Low Coolant Sensor |
| FleetCom_SS 3174-FTL | 2025-12-06. Other. Fleet Communication for SS 3174-FTL |