# Service bulletin FT4651

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: 10240760
- Published by NHTSA: 2023\-08\-17
- Manufacturer's number: FT4651
- Manufacturer's date: 2023\-08\-16
- NHTSA component: FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

## NHTSA's summary

Failure of DEF sensor GEN 6 within the expected 5\-years lifespan.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10240760-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10240760-9999.pdf)

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

## Components

Engine, Exhaust and emissions, Fuel system

## Vehicles listed

- 2016 NOVA BUS LFS
- 2018 to 2020 NOVA BUS LFS
- 2015 to 2019 NOVA BUS LFS ARTIC

## Recalls for the same vehicles and component

- [24V231000](/recalls/nhtsa/24V231000.md), 2024-03-27: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
- [22V416000](/recalls/nhtsa/22V416000.md), 2022-06-13: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
- [2021286](/recalls/tc/2021286.md), 2021-05-14: Fuel System
- [21V351000](/recalls/nhtsa/21V351000.md), 2021-05-14: FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL
- [2019171](/recalls/tc/2019171.md), 2019-04-05: Engine
- [2017264](/recalls/tc/2017264.md), 2017-05-16: Engine
- [2015525](/recalls/tc/2015525.md), 2015-11-05: Engine

## Other bulletins for the same vehicles and component

- [FT5554](/bulletins/10251113.md), 2024-03-04, Service bulletin: ENGINE AND ENGINE COOLING. The Cabin Coolant Level Sensors for the LOW and HIGH levels are swapped.
- [LI5316ER2](/bulletins/10250586.md), 2024-02-24, Service bulletin: ENGINE AND ENGINE COOLING. Crank case vent \(CCV\) hoses may get damaged over time.
- [LI5427E](/bulletins/10247614.md), 2023-12-22, Service bulletin: ENGINE AND ENGINE COOLING. Improved durability of engine\-side heat exchanger hoses.
- [BS5469E](/bulletins/10247612.md), 2023-12-22, Service bulletin: ENGINE AND ENGINE COOLING. The belt guard hinge may crack.
- [FT5448](/bulletins/10244594.md), 2023-11-01, Service bulletin: ENGINE AND ENGINE COOLING; STEERING. Rework allied motion e\-Steering motor. 24V e\-steering power supply threads length tolerances might not be respecting to the drawing specifications.
- [BS5447E](/bulletins/10244593.md), 2023-11-01, Service bulletin: ENGINE AND ENGINE COOLING; STEERING. Rework allied motion e\-Steering motor. 24V e\-steering power supply threads length tolerances are not respect to standard.
- [BS5467E](/bulletins/10244198.md), 2023-10-17, Service bulletin: STRUCTURE; FUEL SYSTEM, GASOLINE. Potential presence of a gap may cause frame crack. Only to perform during a frame crack repair process near front bolt of joint \#2.
- [LI5228ER2](/bulletins/10235130.md), 2023-04-27, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:SUMP/TANK. DEF GEN4 tank, tank head and sensor will no longer be available in service
- [FT5361](/bulletins/10233272.md), 2023-04-03, Service bulletin: ENGINE AND ENGINE COOLING. Coolant pipe assy failing. The adaptor on the Coolant pipe assembly between the engine and circulation pump broke in service at the beginning of the copper thread.
- [BS5320ER1](/bulletins/10233268.md), 2023-04-03, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Fire light coming on in the dash, Fire detection system

JSON: [/v1/bulletins/10240760](/v1/bulletins/10240760)

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