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NHTSA campaign 21V468000

Alexander Dennis Recall 21V-468: High Pressure Fuel Rail Assembly May Leak Fuel

NHTSA recall 21V468000 was reported by Alexander Dennis Inc. on June 23, 2021, with 310 vehicles potentially affected (per NHTSA). NHTSA's record lists the Alexander Dennis Enviro 500 for model years 2017–2020. Owners were notified on June 18, 2021, per NHTSA.

Updated daily from NHTSA's recall files

Is my vehicle included?

This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V468000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.

To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.

Free VIN check: decode a VIN to see its year, make and model.

Key facts

NHTSA campaign
21V468000 (also written 21V-468 or 21V468)
Filed by
Alexander Dennis Inc.
Report received
Potentially affected
310 vehicles (per NHTSA)
Component
Fuel System, Diesel — Fuel Injection System — Fuel Rail
Owners notified

Repair completion: 85.06% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)

NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.

Vehicles listed for this recall

NHTSA's recall record lists these vehicles for recall 21V468000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.

Alexander Dennis

All Alexander Dennis recalls

NHTSA's recall notice

As NHTSA's recall record states it for campaign 21V468000.

Defect description

Alexander Dennis, Inc. (Alexander Dennis) is recalling certain 2017-2020 E500 buses. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.

Safety consequence

A fuel leak in the presence of an ignition source increases the risk of a fire.

Manufacturer remedy

Dealers will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. Owner notification letters were mailed June 18, 2021. Owners may contact Alexander Dennis customer service at 1-951-244-9429.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Sources

Official NHTSA notice for recall 21V468000

Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.