# Transport Canada recall 2021458

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: Transport Canada \(Canada\)
- Campaign number: 2021458
- Manufacturer's number: CR5154
- Reported: 2021\-07\-27
- Component: Engine
- Notification type: Safety Mfr
- Units potentially affected: 56

## What is wrong

Issue:

On certain buses, a programming problem could cause excess diesel exhaust fluid \(DEF\) to be injected into the exhaust after\-treatment system. As a result, there could be a higher than normal amount of ammonia in the exhaust emissions.

Note: This recall only affects buses equipped with a Cummins 2021 model year L9 diesel engine.

Safety Risk:

Exposure to elevated levels of ammonia could create a risk of injury.

Corrective Actions:

Nova Bus will notify owners by mail and instruct you to take your bus to a Cummins authorized service center to update the software for the engine control module. To reduce the safety risk, Nova Bus and Cummins recommend that you should avoid running the engine in a confined space, such as a service bay, without the use of an exhaust extraction system.


## Vehicles this campaign lists

- [2021 NOVA BUS LFS](/makes/novabus/lfs/2021/recalls.md)

## Bulletins for the same vehicles and component

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

- [BS5580E](/bulletins/10253692.md), 2024-04-30, Service bulletin
- [FT5554](/bulletins/10251113.md), 2024-03-04, Service bulletin
- [BS5511E](/bulletins/10247619.md), 2023-12-22, Service bulletin
- [LI5427E](/bulletins/10247614.md), 2023-12-22, Service bulletin
- [BS5469E](/bulletins/10247612.md), 2023-12-22, Service bulletin
- [FT5448](/bulletins/10244594.md), 2023-11-01, Service bulletin
- [BS5447E](/bulletins/10244593.md), 2023-11-01, Service bulletin
- [FT5361](/bulletins/10233272.md), 2023-04-03, Service bulletin
- [BS5320ER1](/bulletins/10233268.md), 2023-04-03, Service bulletin
- [BS5380E](/bulletins/10233263.md), 2023-04-03, Service bulletin

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

Contains information licensed under the Open Government Licence – Canada.

JSON: [/v1/recalls/tc/2021458](/v1/recalls/tc/2021458)

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