The U.S. arm of Nova Bus has reported to federal regulators that the remote fuel filter hoses on 453 of its diesel city buses may separate from their fittings. The report reached the National Highway Traffic Safety Administration on October 27, 2026. A hose that lets go can spill diesel under the bus and stall the engine.
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The recall covers 2022-2024 LFS and 2023 LFS Artic transit buses, the low-floor models and their articulated version that many transit agencies run on urban routes. Nova Bus will replace the hoses at no charge, and owner letters are expected to go out on December 26, 2026.
Fuel filter hoses on the 2022-2024 LFS and 2023 LFS Artic
The record that NHTSA published through the federal data.transportation.gov recall feed lists the campaign as 26V712000, filed under the subject “Fuel Filter Hoses May Disconnect and Leak Fuel.” The component is classed as the diesel fuel system, and the manufacturer’s own campaign number is CR5969. Its defect summary is short: the remote fuel filter hoses may separate from the fitting, causing a fuel leak and an engine stall.
That feed counts 453 potentially affected vehicles, a figure that applies to buses in the United States only. The listing gives no breakdown between the standard LFS and the longer Artic, and it does not say which build dates or hose part numbers fall inside the recall. Owners who want that level of detail will have to wait for the paperwork Nova Bus sends, or ask the company directly at the customer service line the record gives, 1-800-350-6682.
A leak and a stall: the two hazards in the record
NHTSA’s entry for campaign 26V712000 names two separate consequences. A fuel leak in the presence of an ignition source increases the risk of a fire, and an engine stall increases the risk of a crash. On a transit bus carrying standing passengers through traffic, either outcome is a serious one, which is why a loose hose is treated as a safety defect and not as a maintenance annoyance.
Two answers in the record temper the urgency. It states that there is no fire risk when the buses are parked, and it does not instruct owners to stop driving them. Agencies can therefore keep the affected buses in service while they wait for replacement hoses, a decision that rests with each operator, though the record does not say whether any bus has already lost a hose on the road or whether anyone has been hurt.
Earlier LFS hose recalls: 52 fuel-hose buses in 2024, then steering and coolant
Nova Bus has been here before with this model family. In May 2024 it filed recall 24V-328 for 52 of its 2022-2023 LFS diesel buses built between January 26 and August 28, 2023. That filing named the secondary remote fuel filter hoses on Cummins engines, specifically Cummins part 6316899 made before April 2023 with 18.7 mm crimping, and it replaced them with a part using 18.3 mm crimping.
The 2024 report gave the cause as undetermined, with more information expected from supplier Cummins Inc. It also recorded three warranty claims and no accidents or injuries, and it told owners not to drive the vehicles until repaired. Transport Canada’s notice for the same defect, last updated on May 21, 2024, likewise advised owners to park the buses until the work was done. The new record is far broader, covering 453 buses and model years through 2024, and it carries no do-not-drive instruction. Whether it addresses the same Cummins hose is not stated in the entry reviewed.
Fuel hoses are not the only rubber-and-fitting problem Nova Bus has disclosed. In July 2023 the company reported recall 23V-481, covering 196 buses whose power steering hoses had been assembled with improper fittings by a supplier, Connectall Ltd. A hose separation there could cause a sudden loss of power steering assist, and the report said one customer had logged a failure in April 2023 and two more in June.
In August 2025 came recall 25V-553 for 24 buses from 2013, whose HVAC roof-unit coolant hoses were reinstalled instead of replaced during an earlier campaign, 18V117. That report described two incidents with alleged injuries in Canada, where a failed hose could leak hot coolant into the passenger area. Each of these filings says Nova Bus has no dealer network, which means owners and agencies deal with the manufacturer directly for the repair.
What owners can check before the December letters arrive
Because the recall is aimed at fleet operators, the practical steps fall to transit agencies and contractors that own LFS buses from the 2022 to 2024 model years. They can look up each vehicle identification number on NHTSA’s recall search page, which accepts a 17-character VIN, though the site warns that very recent recalls may not appear right away.
The open questions are the ones the record leaves blank. NHTSA’s entry offers no root cause, no count of field failures and no schedule for when parts will reach the 453 buses, and the owner letters that would carry those details are still weeks away.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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