Vehicle recall 18V921000 · December 20, 2018
2017-2018 Honda Clarity Fuel Cell
The previous software remedy may have been incomplete.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Honda (American Honda Motor Co.) is recalling certain 2017-2018 Clarity Fuel Cell vehicles previously repaired under recall 18V-068. The previous software remedy may have been incomplete. As a result, the fuel cell control unit (FC-ECU) may misinterpret a small cell voltage drop, causing the vehicle to have a partial or complete loss of power.
- Consequence
- A loss of power can increase the risk of a crash.
- Remedy
- Honda has notified owners, and dealers will update the FC-ECU software, free of charge. The recall began February 14, 2019. Owners may contact Honda customer service at 1-888-234-2138. Honda's number for this recall is A3O.
- 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.safercar.gov.
Recall details
- NHTSA campaign
- 18V921000
- Reported to NHTSA
- December 20, 2018
- Filed by
- Honda (American Honda Motor Co.)
- Manufacturer campaign
- A3O
- Owner notification
- February 14, 2019
- Vehicles potentially affected
- 1,082
- Initiated by
- the manufacturer
- Components
- Electrical system › Software; Hybrid propulsion system
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Honda Clarity Fuel Cell (2017-2018): 2018, 2017
Has your Honda been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. Recall repairs are free.