Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2020 Honda Accord owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact's father owns a 2020 Honda Accord. The contact stated that following a short drive, the vehicle was parked on the street. The contact said that neighbors tried to alert him that the vehicle was on fire. The contact is hearing impaired and did not hear his neighbors knocking on his door. The fire department was called by a third party and extinguished the flames. The contact stated that the fire department left a note on her father's front door explaining that the fire had started under the driver's side front tire wheel well, then proceeded down the driver's side and was extinguished using water by the driver's side rear wheel well. The right passenger side of the vehicle was not damaged by the fire. There were no injuries. The fire department wrote a report and determined that the fire was an electrical system failure. …
The contact owns a 2020 Honda Accord. The contact stated while driving at 25 MPH, the front driver's side air bag, the front passenger's side air bag, and the knee air bags were deployed unintendedly. Additionally, there was a significant amount of chemical smoke inside the vehicle. There was no warning light illuminated. The contact stated that she depressed the brake pedal to stop and exit the vehicle, but the vehicle failed to respond. The contact stated that the vehicle rolled for 30-40 seconds and stopped after hitting a bicycle pole. The contact stated that the front passenger's side seat was occupied by an adult and the rear seats were occupied by an adult and a baby in the car seat when the failure occurred. The passengers sustained body aches and ringing ears but did not seek medical assistance. …
The contact owns a 2020 Honda Accord. The contact stated that while driving approximately 30 MPH, several unknown warning lights illuminated. The contact pulled over and turned off the vehicle to reset the instrument cluster; however, the warning lights remained illuminated. The contact checked under the hood to check if the battery terminal was loose, but found no issues. The contact had taken the vehicle to an independent mechanic who replaced the 12-Volt battery; however, the warning lights returned. Additionally, the contact stated that while stopped at a traffic light or while depressing the brake pedal, the vehicle was vibrating. The contact had not taken the vehicle to a local dealer or to an independent mechanic to be diagnosed or repaired. The contact had stopped driving the vehicle. …
The contact owns a 2020 Honda Accord. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated, and the Forward Collision Avoidance message was displayed. The vehicle was taken to the dealer. The contact was informed that the radar sensor, located on the front bumper, indicated that the vehicle was involved in a crash. The contact stated that the vehicle was not involved in a crash. The vehicle was repaired. The contact stated that on a separate occasion, while driving at an undisclosed speed, the vehicle experienced phantom braking twice. After several minutes, the vehicle returned to normal functionality. The "BRAKE" message was displayed. The contact stated that the failure had occurred while driving on the expressway. The vehicle was not taken to the dealer or an independent mechanic to be repaired. …
The contact owns a 2020 Honda Accord. The contact stated that while an occupant was seated in the front passenger's seat, the supplemental restraint system (SRS) warning light illuminated. The message "Please see Dealer" was displayed. The contact associated the failure with NHTSA Campaign Number: 24V064000 (Air Bags). The vehicle was not diagnosed or repaired. Additionally, the emissions system warning light remained continuously illuminated, and the engine was idling roughly. The vehicle was taken to an independent mechanic, where it was diagnosed with a fuel pump failure. The contact associated the failure with NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline). The vehicle was not repaired. Additionally, several systems malfunctioned and became inoperable, with unknown warning lights illuminated. …
The contact owns a 2020 Honda Accord. The contact stated that upon intermittent starts of the vehicle, several, various warning messages would appear on the instrument panel. Warning messages such as tire pressure monitor, brake system problem, brake hose system,etc would all appear on the instrument panel and would remain on the instrument panel until the system would be cleared by the dealer. The vehicle had been taken to the dealer on multiple occasions to address the failure; however, the dealer could not diagnose the failure. The vehicle was then taken to Honda Of Tomball(22727 Tomball Pkwy, Tomball, TX 77375) where they diagnosed the vehicle with a defective head gasket. The contact refuted the diagnostic and took the vehicle back to the original dealer where they agreed with the contact that there was not an issue with the head gasket. …
During a forward-side lane departure collision in my 2020 Honda Accord, the Body Control Module (BCM), forward collision radar system, braking assist, and Vehicle Stability Assist (VSI) all failed to activate. As a result, the vehicle did not brake, warn, or stabilize before impact. The airbags also failed to deploy during the crash. My safety and the safety of others were put at serious risk, as the vehicle did not respond as designed despite being equipped with these systems. The car is now undrivable but available for inspection. This issue has not yet been confirmed by a dealer due to the car's condition, but similar failures have been reported in other 2020 Honda Accords already under recall. The insurance company did not request vehicle data and did not inspect the systems. …
The contact owns a 2020 Honda Accord. The contact stated while driving 25 MPH, the messages "Lane Departure. See Dealer", "Engine Problem See Dealership", "High Beam Problem. See Dealer" and other unknown messages were displayed. The vehicle was towed to the dealer, where an unknown fuse was replaced; however, the vehicle started temporarily but the failure recurred. The dealer diagnosed and determined that the transmission needed to be replaced. The vehicle was towed to a transmission specialist, where the transmission was replaced; however, the failure persisted. The contact related the failure to NHTSA Campaign Number: 20V771000 (Electrical System, Back Over Prevention, Visibility/Wiper, Visibility, Exterior Lighting); however, the VIN was not included. The vehicle was not repaired. …
I'm taking my car to the body shop over five occasions and have to take it back one due for it being a computer chip, which was replaced, but the lights on my dash all of them comes on after the second start up. Cruise control doesn't work brake code doesn't work all the lights for staring brakes says to check everything.
I am writing this letter to complaint about a major defect for my vehicle as the Honda dealership located at 1036 Jericho Turnpike , Huntington NY doesn't want to resolve as the vehicle is still under the manufactory warranty. The defect / problem involves the emergency brake release switch located in the center console area . I reported the defect / problem and hoped that Honda would honor the manufactory warranty under 36, 000 mile policy to replace an or repair any defects without cost to the consumer . However I was informed that payment in the amount of seven hundred and fifty dollars would be needed to resolve / repair the problem/ defect. I was told that the clip that hold the switch/ device to the center comnsole were broken and it is the current owner problem to resolve as it not covered. …
Electrical complaints in other Accord years
Frequently asked questions
How common are electrical problems on the 2020 Honda Accord?
NHTSA has 53 complaints about the electrical system of the 2020 Honda Accord, 15% of the model year's 364 complaints. The component named most often is software (1 mentions).
Is there a recall for 2020 Honda Accord electrical problems?
No. NHTSA lists no electrical system recall for the 2020 Honda Accord, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2020 Honda Accord electrical problems start?
Half of the complaints with a recorded mileage happened before about 17,000 miles, and 58% before 25,000 miles.
Is it dangerous?
Owners linked 3 crashes, 1 fire and 5 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.