2020 Honda Clarity Plug-In Hybrid problems

Filed Oct 25, 2026 · Driver assistance, Electrical · NJ

# the federal safety agency VEHICLE SAFETY COMPLAINT **Subject: Sudden Unintended Braking, Violent Vehicle Bucking, and Loss of Propulsion – 2020 Honda Clarity Plug-In Hybrid** **Vehicle Information** - Manufacturer: Honda - Model: Clarity Plug-In Hybrid - Model Year: 2020 - Mileage: Approximately 35,000 miles - Incident Date: October 2026 (exact date to be confirmed) - Incident Location: [XXX] - Servicing Dealership: DCH Paramus Honda, [XXX] - Vehicle Identification Number (VIN): [Insert VIN] ## Description of Safety Incident I am reporting a serious and potentially life-threatening vehicle safety malfunction involving my 2020 Honda Clarity Plug-In Hybrid, which experienced sudden, unintended, violent braking and a subsequent severe loss of propulsion while traveling on a public roadway. The incident occurred approximately five minutes after I picked up my vehicle from DCH Paramus Honda, an authorized Honda dealership, following a warranty-covered replacement of the air-conditioning condenser. The vehicle had approximately 35,000 miles and was operating normally before this repair. While driving home to [XXX], at the intersection of [XXX], my vehicle suddenly and unexpectedly began violently jerking and bucking, with the wheels seemingly locking, before coming to an abrupt stop. **There was no vehicle, pedestrian, or other obstacle directly ahead of my car. The roadway was clear, and there was no apparent reason for emergency braking.** I did not intentionally activate the emergency parking brake or initiate an emergency stop. Immediately following this event, numerous dashboard warning indicators illuminated, including the following specific messages: - **Collision Mitigation Braking System Problem** - **Power System Problem** The vehicle was initially unable to function normally. After restarting it, the car operated only at severely reduced power, with a m INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 22, 2026 · Driver assistance, Electrical · CA

The 2020 Honda Clarity's multipurpose windshield camera fails intermittently, often at startup. The vehicle displays Brake System and Honda Sensing-related warnings, disabling Collision Mitigation Braking, adaptive cruise control, lane keeping assist, and road-departure mitigation. The vehicle may otherwise operate, but multiple driver-assistance safety systems are unavailable. A dealer attributed the issue to the windshield camera module and possible calibration. The warnings began approximately June 2025 and remain intermittent. The camera is available for inspection. No crash, fire, injury, or police report.

Filed May 12, 2026 · Driver assistance · CA

The forward-facing multipurpose camera unit (ADAS camera) failed internally while driving, causing the simultaneous deactivation of multiple critical safety systems including Collision Mitigation Braking (CMBS), Road Departure Mitigation, and Lane Keeping Assist (LKAS). The failure is indicated by persistent dashboard warning messages stating 'System Fault' or 'Honda Sensing Problem'.A professional diagnostic scan confirmed DTC code U3000-49 (Multipurpose Camera Unit Internal Failure). The sudden and unpredictable loss of these automated safety features reduces the vehicle's ability to assist in avoiding collisions and increases the risk of a crash, particularly in emergency situations. This appears to be a widespread manufacturing defect in the camera hardware that poses an unreasonable safety risk to drivers and passengers.

Filed Mar 22, 2026 · Driver assistance · MD

The ADAS camera system failed causing multiple warnings and failures including lane departure system, forward collision system, adaptive cruise control and lane keeping assistance.

Filed Dec 31, 2024 · Acceleration, Electrical · CA · crash

During a U-turn, when I turned the steering wheel my vehicle suddenly accelerated unexpected. I suspect there may have been a malfunction in the vehicle's electronic control system that caused this sudden unintended acceleration. I did alert Honda North America to study the problem. On [XXX], while driving on a narrow street at a speed of less than 5 miles per hour, my vehicle suddenly accelerated as I was making a U-turn. In my nervous response, I pressed the accelerator pedal, which exacerbated the situation and caused my vehicle to hit the driveway bushes at [XXX] Â Fortunately, the property damage was minor, affecting only the bushes, and there were no injuries. I believe it is important to report this Sudden Unintended Acceleration problem for your file. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 12, 2024 · Visibility · CA

A/C stopped working, so defrost is no longer working efficiently. Honda says they only cover the condenser under the extended warranty and not the evaporator and want to charge me over 2200 to repair. If they are extending A/C warranty for condenser it should cover the entire A/C system since everyone online that had an issue with the condenser eventually ends up with an evaporator issue as well and then the defrost or A/C do not work properly.

Filed Dec 23, 2022 · Engine, Transmission · CA

Engine RPM's rise (near red line at times) with little to no propulsion. The slang I've found used in online forums, showing that this is a common problem, is "angry bees."

Filed Aug 30, 2020 · Acceleration, Engine · 3,060 miles · CA

When the battery is low the honda clarity's RPM jump really high and vehicle revs really hard and starts to lose power. My vehicle had two battery bars and when I tried to climb it mountain it lost speed. I was almost hit twice because my car kept losing speed and it was revving like it was struggling to keep moving. Very scary situation to be in with other cars and little children in my car. I have a video of the car revving.