Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
ONL6CK09212022
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 up to date. This may cause the vehicle to incorrectly display a hydrogen system warning on the instrument panel and store a system malfunction.
A22090A
Dealer Message - In the event you experience a sub tank wire harness rodent damage on the 2017â2020 Clarity FCV, after repairing / replacing the wire harness, wrap the areas shown below with RODENT DETERRENT TAPE, P/N 4019-2317.
A20-092
Service Bulletin - The customer cannot refuel the vehicle completely at certain hydrogen stations.
A20-061
Service Bulletin - The MIL comes on with DTC P1FBF (air pump controller failure [internal failure warning]) during startup.
A19-006
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 membrane in the fuel cell. This deterioration can reduce fuel cell output.
A19-054_version3
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 time, the corrosion may prevent the water pump's motor from starting, which will prevent the vehicle from starting. If this happens while driving, the vehicle can only be driven for a short distance at greatly reduced power.
AJA05150
Job Aid - The following procedures in the service information require the Fuel Cell Service Equipment Kit (T/N VSBHONFCVKT1) and the Portable Vent Stack (T/N FEFPVS).
AJA11262
Job Aid - American Honda has created an instructional video on how to replace the fuel cell stack. When working on or around the fuel cell system, pay attention to the service precautions for the fuel cell system.
A19-054_version2
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 time, the corrosion may prevent the water pump's motor from starting, which will prevent the vehicle from starting. If this happens while driving, the vehicle can only be driven for a short distance at greatly reduced power.
A19-054
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 time, the corrosion may prevent the water pump's motor from starting, which will prevent the vehicle from starting. If this happens while driving, the vehicle can only be driven for a short distance at greatly reduced power.
A19050B
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 Memorization Procedure in the i-HDS, it won't complete.
ONL6CK03052019
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 and store a system malfunction.
ABOM01142019901
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 the fuel cell stack on a limited number of vehicles due to premature deterioration.
A19-001
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
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 project.
A18110B
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 FC Coolant Low. See Your Dealer message in the driver information interface shortly after your repair and/or will damage the new fuel cell stack.
A17070B
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, This fluid can't be mixed with any other fluid. Doing so cuts its insulating properties and will damage the fuel cell system.
A18-013
Service bulletin - The audio system volume will not change when using the remote switch on the steering wheel. There is an internal software issue with the audio-navigation unit.
ATS180202
Tech Line Summary Article - After doing a Code A maintenance service (replace the FC ion exchanger filter element), is the Maintenance Minder not resetting? We?re aware of this issue and have it under investigation.
ATS170904
Tech line summary article - In a Code A maintenance service, you must replace the FC ion exchanger filter element. Right now, that filter element is in short supply, but we expect to have it back in stock soon.
ATS170903
Tech line summary article - A temperature sensor failure in the main hydrogen tank or sub hydrogen tank may cause DTC P1F76 (main hydrogen tank temperature sensor malfunction) or P1F77 (sub hydrogen tank temperature sensor malfunction) to set while fueling. We?re aware of this issue, and we currently have it under investigation.
A15060D
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 it toward you, like you see here. The covering comes right off.
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.