# Service bulletin WI19\-022

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: 10169679
- Published by NHTSA: 2020\-01\-02
- Manufacturer's number: WI19\-022
- Manufacturer's date: 2020\-01\-02
- NHTSA component: ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM

## NHTSA's summary

Warranty Information Letter announcing Detroit NOx Sensor Circuit Improvements for GHG17 After Treatment Systems

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10169679-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10169679-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine, Equipment and accessories

## Vehicles listed

- 2015 to 2020 FCCC MT55
- 2016 FCCC S2
- 2015 to 2017 FCCC S2G
- 2019 to 2020 FCCC S2G
- 2017 to 2020 FCCC S2RV
- 2015 to 2020 FCCC XBP
- 2015 to 2019 FCCC XBR
- 2015 to 2019 FCCC XBS
- 2015 to 2019 FCCC XCL
- 2015 to 2020 FCCC XCM
- 2015 to 2019 FCCC XCP
- 2015 to 2020 FCCC XCR
- 2015 to 2019 FCCC XCS
- 2018 FCCC redundant S2G
- 2015 to 2020 FREIGHTLINER 108SD
- 2015 to 2020 FREIGHTLINER 114SD
- 2015 to 2020 FREIGHTLINER 122SD
- 2015 to 2020 FREIGHTLINER BUSINESS CLASS M2
- 2015 to 2020 FREIGHTLINER CASCADIA
- 2015 to 2020 THOMAS BUILT BUSES SAF\-T\-LINER C2
- 2015 to 2020 THOMAS BUILT BUSES SAF\-T\-LINER EFX
- 2015 to 2020 THOMAS BUILT BUSES SAF\-T\-LINER HDX
- 2015 to 2020 WESTERN STAR 4700
- 2015 to 2020 WESTERN STAR 4800
- 2015 to 2020 WESTERN STAR 4900
- 2015 to 2020 WESTERN STAR 5700
- 2015 to 2020 WESTERN STAR 6900

## Recalls for the same vehicles and component

- [2026091](/recalls/tc/2026091.md), 2026-03-03: Electrical
- [22V338000](/recalls/nhtsa/22V338000.md), 2022-05-16: EQUIPMENT:OTHER:LABELS
- [2021697](/recalls/tc/2021697.md), 2021-11-12: Electrical
- [21V882000](/recalls/nhtsa/21V882000.md), 2021-11-12: ELECTRICAL SYSTEM:WIRING
- [2021399](/recalls/tc/2021399.md), 2021-06-25: Electrical
- [21V481000](/recalls/nhtsa/21V481000.md), 2021-06-25: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
- [2021172](/recalls/tc/2021172.md), 2021-03-24: Electrical
- [21V206000](/recalls/nhtsa/21V206000.md), 2021-03-24: ELECTRICAL SYSTEM:WIRING
- [20V634000](/recalls/nhtsa/20V634000.md), 2020-10-14: EQUIPMENT:OTHER:LABELS; TIRES
- [2020408](/recalls/tc/2020408.md), 2020-09-01: Engine

## Other bulletins for the same vehicles and component

- [SS 3146\-FTL](/bulletins/11031985.md), 2026-05-02, Other: ELECTRICAL SYSTEM. Service Solution for M2, 108SD, 114SD \- Unable to Program Replacement Bulkhead Module \- Certain Model Years
- [SS 3124\-FTL](/bulletins/11031974.md), 2026-05-02, Other: ELECTRICAL SYSTEM. Service Solution for Legacy M2 Bulkhead Module \(BHM\) Replacement and DiagnosticLink Issues
- [FleetCom\_Heater Core](/bulletins/11027493.md), 2026-01-08, Other: ENGINE. Fleet Communications for Heater Core Plugging
- [FleetCom\_SS 3174\-FTL](/bulletins/11026469.md), 2025-12-06, Other: ELECTRICAL SYSTEM. Fleet Communication for SS 3174\-FTL
- [FleetCom\_AMP Draw](/bulletins/11026454.md), 2025-12-06, Other: ELECTRICAL SYSTEM. Fleet Communications for Key off amp draw
- [FleetCom\_SS 3163\-FTL](/bulletins/11026453.md), 2025-12-06, Other: ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
- [FleetCom\_Low Coolant](/bulletins/11026421.md), 2025-12-05, Other: ENGINE. Fleet Communications for Low Coolant Sensor
- [CXA\_10\_25\_Low Coolant](/bulletins/11024962.md), 2025-11-05, Other: ENGINE. CX Advocate for P4, WST X\-Series, DD Engines Low/Critical Low Coolant Warnings
- [CXA\_10\_25\_Conmet Oil Pan](/bulletins/11024958.md), 2025-11-05, Other: ENGINE. CX Advocate for ConMet Oil Pan Insert Additional Issues
- [SS3124\-FTL](/bulletins/11019799.md), 2025-06-27, Other: ELECTRICAL SYSTEM. Service Solution for Legacy M2 Bulkhead Module \(BHM\) Replacement and Diagnosticlink Issue

JSON: [/v1/bulletins/10169679](/v1/bulletins/10169679)

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