# Service bulletin LI4263ER1

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: 10130022
- Published by NHTSA: 2018\-03\-12
- Manufacturer's number: LI4263ER1
- Manufacturer's date: 2018\-02\-21
- NHTSA component: FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE

## NHTSA's summary

Subject to application and duty cycle, DEF dosing valve can clog up and cause engine to derate, stall, lose power and log FC3568. Increasing dosing valve and DEF hose angle can help reduce such occurrence. Vehicles reporting repetitive FC3568 can be modified according to procedure herein.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10130022-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10130022-0001.pdf)

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

## Components

Engine, Exhaust and emissions, Fuel system

## Vehicles listed

- 2013 to 2014 NOVA BUS LFS
- 2015 to 2017 NOVA BUS LFS
- 2013 to 2014 NOVA BUS LFS ARTIC
- 2015 to 2017 NOVA BUS LFS ARTIC

## Recalls for the same vehicles and component

- [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

- [LI5427E](/bulletins/10247614.md), 2023-12-22, Service bulletin: ENGINE AND ENGINE COOLING. Improved durability of engine\-side heat exchanger hoses.
- [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.
- [FT4651](/bulletins/10240760.md), 2023-08-17, Service bulletin: FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Failure of DEF sensor GEN 6 within the expected 5\-years lifespan.
- [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
- [FT5242](/bulletins/10231890.md), 2023-02-25, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. ECP radiator failures deemed to be due to overpressure events.
- [FT5243](/bulletins/10231883.md), 2023-02-25, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. ECP radiator failures deemed to be due to overpressure events.
- [APS5370E](/bulletins/10231881.md), 2023-02-24, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. The Delco\-Remy alternator is obsolete. Air cooled ductless \(Almott\) alternator, power cable and hardware kit to replace the Delco\-Remy oil\-cooled alternator.
- [LI5228ER1](/bulletins/10214835.md), 2022-06-30, Service bulletin: FUEL SYSTEM, GASOLINE. DEF tank Head Unit GEN4
- [LI5228E](/bulletins/10210964.md), 2022-05-05, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING. DEF tank Head Unit GEN4 N8900882 is no longer available in service, it is replace by the new DEF tank Head Unit GEN5 N8910051
- [PC1025R3](/bulletins/10206967.md), 2022-02-04, Service bulletin: ENGINE AND ENGINE COOLING. radiator leaking coolant

JSON: [/v1/bulletins/10130022](/v1/bulletins/10130022)

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