NHTSA campaign 21V690000 · Honda campaign KM6
Honda Recall 21V-690: ABS Modulator May Leak Brake Fluid
NHTSA recall 21V690000 (Honda campaign KM6) was reported by Honda (American Honda Motor Co.) on September 2, 2021, with 262 vehicles potentially affected (per NHTSA). NHTSA's record lists the Honda CB500X and Honda CBR500R for model years 2019–2020. Owners were notified on November 12, 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 21V690000 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.
Honda VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 21V690000 (also written 21V-690 or 21V690)
- Filed by
- Honda (American Honda Motor Co.)
- Honda campaign number
- KM6
- Report received
- Potentially affected
- 262 vehicles (per NHTSA)
- Component
- Service Brakes, Hydraulic
- Owners notified
Repair completion: 36.26% (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 21V690000. 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.
Honda
All Honda recallsNHTSA's recall notice
As NHTSA's recall record states it for campaign 21V690000.
Defect description
Honda (American Honda Motor Co.) is recalling certain 2019-2020 CB500X and CBR500R ABS motorcycles. Excessive grease in the ABS modulator may collect debris, which can get stuck in the check valve and cause a brake fluid leak.
Safety consequence
A brake fluid leak can reduce braking performance and increase the risk of a crash.
Manufacturer remedy
Dealers will inspect the lot number on the ABS modulator, and replace the modulator as necessary, free of charge. Owner notification letters were mailed November 12, 2021. Owners may contact Honda Powersports customer service at 1-866-784-1870. Honda's number for this recall is KM6.
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 21V690000
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.