AutoStatsIQ
Data through Oct 2026
Model year

2018 Honda Clarity Fuel Cell

Sedan, 4x2, built in Japan. Owner complaints on file from Apr 30, 2020 to May 21, 2020.

Recalls (2)Complaints (2)Investigations (0)Bulletins (20)
Recall campaigns covering this model year22,164 vehicles or units across those campaigns
Owner complaints2Below the median 2018 sedan
Severity index0.02018 sedans average 6.6
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2018 Honda Clarity Fuel Cell peaked in 2020, with 2 filed

Owner complaints about this model year, by the year they were filed with NHTSA.

00.511.5220202202120222023202420252026
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

50% of complaints about the 2018 Honda Clarity Fuel Cell name fuel system

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

Fuel system
1
Speed control
1
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

2 recall campaigns cover the 2018 Honda Clarity Fuel Cell

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2018 Honda Clarity Fuel Cell
CampaignFiledSubjectComponentVehiclesRemedy
19V-315Apr 18, 2019Internal components may corrode and cause the water pump to failEquipment1,082Part replacement
18V-921Dec 20, 2018Previous software remedy may have been incompleteElectrical system1,082Software update
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2018 Honda Clarity Fuel Cell

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

2 complaints on file, page 1 of 1.

  1. Filed May 21, 2020Failure Dec 11, 2019Indianapolis, INVehicle speed control

    2018 HONDA CLARITY. CONSUMER WRITES IN REGARDS TO VEHICLE NOT ACCELERATING OVER 30 MPH. *LD *JS THE CONSUMER STATED THE VEHICLE SAT IN PARK FOR 30 MINUTES, AFTER WHICH IT WOULD NOT ACCELERATE PAST 30MPH AND THE RPMS ESCALATED TO RPMS. THE VEHICLE WAS TAKEN TO 3 DIFFERENT REPAIR SHOPS NONE WERE ABLE TO MAKE THE REPAIRS. THE CONSUMER STATED THE MPG DROPPED FROM 44 TO 24.7.*JS

    NHTSA complaint 11325815
  2. Filed Apr 30, 2020Failure Apr 5, 202016,193 milesSAN Marino, CAFuel/propulsion system

    2018 HONDA CLARITY FUEL CELL EXPERIENCED A SUDDEN REDUCTION IN POWER DUE TO A FAILURE OF THE FUEL CELL POWER GENERATION. THE CAR DISPLAYED AN ERROR MESSAGE "POWER SYSTEM PROBLEM. STOP DRIVING WHEN SAFE" WHILE DRIVING AT FREEWAY SPEEDS ON THE FREEWAY. THE CAR THEN HAD LOW POWER AND WAS RUNNING OFF THE BATTERY. AFTER PULLING OVER AND TURNING OFF THE CAR AND RESTARTING, IT HAD THE SAME ERROR WITH LOW BATTERY ONLY. THEN WE TURNED OFF, WAITED ABOUT TEN MINUTES, RESTARTED THE CAR, AND THE FUEL CELL SYSTEM SEEMED FINE. THE BATTERY BEGAN TO CHARGE. WE HAVE NOT BEEN ABLE TO REPRODUCE THE PROBLEM SINCE THEN. THIS CAR HAS PREVIOUSLY ALREADY HAD ALL RECALLS COMPLETED, INCLUDING THE SOFTWARE UPDATE TO ADDRESS POWER SYSTEM FAILURES LAST YEAR.

    NHTSA complaint 11322892
Source: NHTSA ODI complaints file.
Investigations

NHTSA has not opened an investigation on this model year

Source: NHTSA ODI investigations file.
All investigations
Service bulletins

20 manufacturer communications cover this model year

Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.

  • ONL6CK09212022 Sep 21, 2022 · Service Bulletin/Repair Instructions
    Owner's Notification Letter - Product Update - Our records indicate that a Product Update has not been completed on this vehicle (Vehicle Identification Number XXXXXXXXXXXXXXXXX). The software that monitors the temperature in the fuel cell tank may not be u…
  • A22090A Sep 16, 2022 · Service Bulletin/Repair Instructions
    Dealer Message - In the event you experience a sub tank wire harness rodent damage on the 2017–2020 Clarity FCV, after repairing / replacing the wire harness, wrap the areas shown below with RODENT DETERRENT TAPE, P/N 4019-2317.
  • A20-092 Dec 9, 2020 · Service Bulletin/Repair Instructions
    Service Bulletin - The customer cannot refuel the vehicle completely at certain hydrogen stations.
  • A20-061 Oct 21, 2020 · Service Bulletin/Repair Instructions
    Service Bulletin - The MIL comes on with DTC P1FBF (air pump controller failure [internal failure warning]) during startup.
  • A20-061 Sep 2, 2020 · Service Bulletin/Repair Instructions
    Service Bulletin - The MIL comes on with DTC P1FBF (air pump controller failure [internal failure warning]) during startup.
  • A19-054_version3 Apr 6, 2020 · Service Bulletin/Repair Instructions
    Service Bulletin - The fuel cell (FC) system uses an electric water pump to circulate insulating fluid and remove excess heat from the fuel cell stack. During manufacturing, the water pump's magnetic surface was not treated for corrosion resistance. Over ti…
  • A19-006 Apr 6, 2020 · Service Bulletin/Repair Instructions
    Service Bulletin - Water improperly discharged inside the fuel cell (FC) stack mixes with hydrogen and oxygen, generating hydrogen peroxide. The hydrogen peroxide/water combination concentrates in one area, accelerating the deterioration of the electrolyte …
  • A19-054_version2 Jun 14, 2019 · Service Bulletin/Repair Instructions
    Service Bulletin - The fuel cell (FC) system uses an electric water pump to circulate insulating fluid and remove excess heat from the fuel cell stack. During manufacturing, the water pump's magnetic surface was not treated for corrosion resistance. Over ti…
  • A19-054 Jun 4, 2019 · Service Bulletin/Repair Instructions
    Service Bulletin - The fuel cell (FC) system uses an electric water pump to circulate insulating fluid and remove excess heat from the fuel cell stack. During manufacturing, the water pump's magnetic surface was not treated for corrosion resistance. Over ti…
  • A19-006 Jun 4, 2019 · Service Bulletin/Repair Instructions
    Service Bulletin - Water improperly discharged inside the fuel cell stack mixes with hydrogen and oxygen, generating hydrogen peroxide. The hydrogen peroxide/water combination concentrates in one area, accelerating the deterioration of the electrolyte membr…
  • A19050B May 16, 2019 · Service Bulletin/Repair Instructions
    ServiceNews Article - When removing and installing a cable reel, you need to keep both the cable reel and the steering angle sensor in position. If you don't , the VSA indicator may come on along with one or more VSA DTCs. And when you run the Neutral Memor…
  • ONL6CK03052019 Mar 5, 2019 · Service Bulletin/Repair Instructions
    Owner Notification Letter - On 2017-18 Clarity Fuel Cell vehicles, the software that monitors the temperature in the fuel cell tank may not be up to date. This may cause the vehicle to incorrectly display a hydrogen system warning on the instrument panel an…
  • A19-006 Feb 16, 2019 · Service Bulletin/Repair Instructions
    Service Bulletin - The telematics system is reporting deterioration of the fuel cell stack. This deterioration can reduce fuel cell output. Water improperly discharged inside the fuel cell stack mixes with hydrogen and oxygen, generating hydrogen peroxide. …
  • ABOM01142019901 Jan 14, 2019 · Service Bulletin/Repair Instructions
    "Dealer message - Today American Honda is notifying dealers of two product updates affecting certain 2017-18 Clarity Fuel Cell vehicles. The first is a software update to the hydrogen tank temperature sensors. The second is a product update to replace th…
  • A19-006 Jan 11, 2019 · Service Bulletin/Repair Instructions
    "Service bulletin - The telematics system is reporting deterioration of the fuel cell stack. This deterioration can reduce fuel cell output. Water improperly discharged inside the fuel cell stack mixes with hydrogen and oxygen, generating hydrogen peroxide…
  • A19-001 Jan 11, 2019 · Service Bulletin/Repair Instructions
    "Service bulletin - The vehicle may incorrectly set DTC P1F76 (main hydrogen tank temperature sensor malfunction) or P1F77 (sub hydrogen tank temperature sensor malfunction). The fuel cell communication control (IR) software is not current."
  • APaS12052018901 Dec 5, 2018 · Service Bulletin/Repair Instructions
    "Dealer message - AHM is studying the current replacement need for the ION filter (PN 3H450-5WM-A01). We would like to collect several samples in the field for this study. A supply of bags and identifying labels will be sent to your dealership for this proj…
  • A18110B Nov 13, 2018 · Service Bulletin/Repair Instructions
    "ServiceNews Article - When replacing the fuel cell stack, make sure you bleed the air from the fuel cell insulating system exactly as called out in the fuel cell insulating fluid replacement procedure in the service information. If you don't, you'll get an…
  • A17070B Jul 2, 2018 · Service Bulletin/Repair Instructions
    Servicenews article - The Clarity Fuel Cell vehicle has two very different cooling systems. One system cools the fuel cell system; the other one cools the inverter system. The fuel cell system uses a 50% coolant mixture called fuel cell insulating fluid, T…
  • A15060D Aug 3, 2017 · Service Bulletin/Repair Instructions
    Service news article - To prevent damage during shipping, leather-wrapped steering wheels come with a protective plastic covering. The easiest way to remove it during PDI is to grab the covering with both hands near the top of the steering wheel and pull i…
Source: NHTSA manufacturer communications files.
About service bulletins