2018 Honda Clarity Electric Electrical system Problems
- Complaints
- 5about this part
- Share
- 21%of 24 total for the year
- Median mileage
- 60,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the electrical system of the 2018 Honda Clarity Electric, 21% of the 24 complaints for this model year. Where a mileage was given, the median is 60,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Since last Wed. (9/24/2025), the car started to show the warnings of Adaptive Cruise Control Problem , Brake Hold System Problem , Brake System Problem , Electric Parking Brake Problem , and Road Departure Mitigation System Problem from time to time. I bought this VHonda Clarity Plug-in Hybrid 2018 in June 2023 as the HoneTrue Certified. Then probably the same time, the car lose the EV mode by itself, and only drives in the gas mode. I found this issue and late manually changed it to EV mode. WHile then it again dropped the EV mode during the driving today (9/28/2025). …”
NHTSA complaint #11690222, filed 2025-09“The infotainment display camera combination is the worst system in any vehicle I’ve seen that has these installed. If it is daylight the screen is nearly impossible to see anything plainly. Someone is going to back into other vehicles or people. This occurs every day the car is used and backed up while the sun is up.”
NHTSA complaint #11517949, filed 2023-04“The vehicle exhibits a dangerous electrical defect involving uncontrolled power-cycling. After shutting down the car, it automatically restarts itself in a continuous loop. During these episodes, the dashboard flickers, the drivetrain shudders, and the vehicle becomes unresponsive to manual 'Stop' button or brake inputs. Most critically, the car autostarts while parked in an enclosed garage. As a Plug-in Hybrid (PHEV), once the EV battery depletes, the internal combustion engine (ICE) engages automatically. …”
NHTSA complaint #11708588, filed 2026-01Related service bulletins
- 10154940Mar 12, 2019Service Bulletin - The Clarity Plug-In Hybrid and Clarity Electric may not start charging when plugged in or may stop charging before the high-voltage lithium-ion battery is full.
- 10147178Oct 27, 2018Service bulletin - The Clarity Plug-In Hybrid and Clarity Electric may not start charging when plugged in or may stop charging before the high-voltage lithium-ion battery is full.
- 10145431Oct 6, 2018Service bulletin - There is a software error in the miles per gallon calculation, which affects the HV range display by reading unusually high.
- 10145430Oct 6, 2018Service bulletin - There is a software problem in the PCM, which may cause the MIL to come on with DTC P26A3 (electric water valve malfunction), DTC P100C (electric VTC motor…
- 10145429Oct 6, 2018Service bulletin - There is a software problem in the climate control unit when running the heater, which may turn the MIL on. There are up to three updates that must be…
- 10145433Oct 4, 2018Dealer message - Today, American Honda is announcing several product updates a?ecting certain 2018 Honda Clarity Plug-In Hybrid (PHEV) models. There may be multiple combinations…
- 10145427Oct 4, 2018Service bulletin - This bulletin is replaced by S/B 18-089, Product Update: 2018 Clarity Plug-In Hybrid EVTC & 3-Way Valve Software Update (P100C/P0010/P26A3)
- 10145426Oct 4, 2018Service bulletin - This bulletin is replaced by S/B 18-091, Product Update: 2018 Clarity PHEV Driver Display Software Update (Mileage)
- 10145390Sep 20, 2018Service bulletin - The Clarity Plug-In Hybrid and Clarity Electric may not start charging when plugged in or may stop charging before the high-voltage lithium-ion battery is…
- 10142444Jun 12, 2018Service bulletin - The HV range display reading is unusually high. There is a software error in the miles per gallon calculation, which affects the remaining HV range display.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 5 | 21% |
Other parts of the 2018 Honda Clarity Electric
7 complaintsBrakes
5 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsEngine
4 complaintsForward collision avoidance
3 complaintsFuel system
3 complaintsTransmission and drivetrain
3 complaintsLane departure
2 complaintsAir bags
1 complaintsSeats
1 complaintsSteering
1 complaintsBody and structure
1 complaints
← All problems reported for the 2018 Honda Clarity Electric
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology