The contact owns a 2020 Honda Accord. The contact stated that after coming to a stop, the vehicle experienced a loss of motive power, accompanied by multiple warning lights illuminating on the instrument cluster and an abnormal coolant odor entering the cabin. The vehicle was towed to an independent mechanic, where an inspection determined that the head gasket failed. The vehicle was towed to the dealer, where diagnostic testing determined that the engine and head gasket required replacement. The dealer informed the contact that coolant leaked into the engine, causing damage to the timing chain guides and timing chain tensioner. The manufacturer was notified of the failure. The contact associated the failure with Technical Service Bulletin: 26-003. The failure mileage was 112,000.
2020 Honda Accord: multiple warning lights
37 of the 370 complaints about the 2020 Honda Accord describe multiple warning lights.
- owner complaints
- 37
- of this car's complaints
- 10%
- typical mileage
- 35,000
- recalls
- 1
Multiple warning lights by model year
What owners say
Unknown cause - Heavy Traffic I get all warning lights (idiot) come on. No performance loss but every advisory and caution is illuminated. Tested battery 550amps and regulator was putting out 14 volts so all seemed fine. Check battery terminals and connections, all good. After two days lights go away and everything works fine. When lights and advisory are on, no cruise control, TMPS, lane departure, assisted steering, and anything else in the caution light display doesn't work. Good thing all other aspects of the car work fine. Unable to determine the issue with Why this happens. Seen on line others have had this same issue.
The contact owns a 2020 Honda Accord. The contact stated that while driving at 35 MPH, several warning lights illuminated. The vehicle was taken to the dealer, where the battery was replaced; however, the failure recurred. The vehicle was taken to three independent mechanics, where the failure was confirmed, and the battery was replaced; however, the failure persisted. The contact stated that the battery was replaced four times within three and a half years. The contact stated that the warning lights turned off temporarily upon replacing the battery. The contact stated that the failure was a common issue.
On 09/18/2026, at 103,000 miles, my vehicle suffered a dangerous powertrain failure where numerous dashboard warning lights illuminated and the car suddenly dropped into "Limp Mode" with an immediate loss of acceleration while in active traffic. I took the vehicle to a certified Honda dealership, where technicians officially diagnosed the issue as a "Fuel System Too Rich" condition (Diagnostic Trouble Code P0172). The dealership confirmed that the factory-installed direct fuel injectors are failing prematurely and leaking raw fuel into the engine cylinders. This manufacturing defect causes severe engine oil dilution, where gasoline contaminates the oil pan, creating an immediate stalling hazard and an extreme risk of a high-speed rear-end collision. Online owner forums and dedicated global social media groups indicate that thousands of other 10th-generation Accord owners are experiencing this identical safety defect. Honda corporate has formally denied goodwill assistance, treating this severe engineering flaw as standard wear and tear. The vehicle and failed components are fully available for inspection upon federal request.
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.
This has happened on numerous of occasions. All the lights appear on the dash as I'm driving. I've noticed they only appear when I'm driving on rough roads or just sitting in the car while it's running. The next day or so, the lights are off. This should be a recall. So many people are having the same issue.
I was driving on the hwy going about 75 mph which is the posted speed when all of a sudden my car went into limp mode almost causing a 18 wheeler to run over top of my car with me and my child in it no warning or anything and the car would only go about 20 miles per hour after of that and now all the lights are on in the dash only have a 115000 miles on the car at this time very unsafe and gonna cause someone to get killed because of something falling on this car
All of the warning lights on my dashboard are on causing the car to loose power while driving. According to the dealership and other Honda owners they have this same issue. Why is my car not showing any recalls when clearly this is a manufacturing issue with a lot of Hondas. Dealership is telling me at least $3000 to repair
All of the lights on my dash board is on
UNKNOWN. I’ve had an issue with all of the lights on my dash coming on for a few days to a week & going off for a couple days then coming back on. I’ve seen numerous of people with the same issue, spend thousands of dollars after a diagnostic text at a Honda dealership and still experiencing the same issue with no solution.
I am writing to formally report a severe safety incident caused by a sudden head gasket failure in my vehicle. While driving on a busy highway, the car abruptly entered "limp mode" and stopped accelerating altogether, putting my family’s safety at immediate risk. Simultaneously, all dashboard warning lights illuminated. The vehicle was towed to an authorized Honda dealership, where technicians confirmed that the sole mechanical issue is a failed head gasket. The vehicle is currently available for inspection.
All lights on dash are on. Problem with running hot, oil is milky looking misfires, vibration is terrible. Cuts off and will not go over 5 mph sometimes.
Service bulletins that may apply
Related recalls
Electrical system: body control module: software
- What is wrong
- Honda (American Honda Motor Co.) is recalling certain 2018-2020 Accord Sedan, Accord Hybrid, and 2019-2020 Insight vehicles. A software error may cause intermittent or continuous disruptions in communication between the Body Control Module (BCM) and other components. This may result in malfunctions of various systems such as the windshield wipers and defroster, rearview camera, exterior lights, audible warning of a stopped vehicle, and power window operation. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 103, "Windshield Defrosting and Defogging Systems" and number 111, "Rear Visibility" as well as FMVSS numbers 104, 108, 114, 118, and 305.
- Risk
- Various system malfunctions such as inoperative windshield wipers, defroster, rearview camera, or exterior lighting can increase the risk of a crash.
- Remedy
- Honda will notify owners, and dealers will update the BCM software, free of charge. The recall is expected to begin February 22, 2021. Owners may contact Honda customer service at 1‑888‑234‑2138. Honda's number for this recall is X95.
Recall number 20V771000 · Recall details
Questions about the 2020 Honda Accord warning lights
Is multiple warning lights a common problem on the 2020 Honda Accord?
37 of 370 owner complaints about the 2020 Honda Accord (10%) mention multiple warning lights. The model year with the most reports is 2018.
Is there a recall or service bulletin for this on the 2020 Honda Accord?
There is 1 recall and 59 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2020 Honda Accord
Check engine light 29Collision warning 26Stalling 22Adaptive cruise 21Fuel pump 21Loss of power 20Jerking 17Phantom braking 16Lane assist 14Airbag light 13Misfire 12Overheating 8Won't shift 8Grinding brakes 6ABS 5
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