2019 HONDA ACCORD HYBRID Engine Problems

It appears the head gasket failed due to an anomaly on the engine block between cylinders. We were driving down the road when the engine lost power and went into limp mode ( dealer term). The problem of the head gasket was confirmed by the dealer, but the anomaly on the short block has not been explained. The engine block was inspected by the service tech, service manager and a rep from Honda. No explanation given. No warning lights came on until immediately after the engine lost power. The engine block is available for inspection at the dealership.

Component or System Failed: The head gasket appears to have failed, leading to coolant leaking into cylinder 4. This has been confirmed by two separate service centers. The vehicle is currently available for inspection if needed. Safety Risk: The failure caused engine misfires and dashboard warning lights to activate while driving, which could have led to a sudden loss of power or control. I had to pull over and restart the vehicle to regain drivability, which put my safety and that of others at risk. Reproduced or Confirmed by a Dealer or Service Center: Yes. The issue was first diagnosed by Honda of Sumner, who initially suspected a compression issue. Their master mechanic later confirmed it was likely a head gasket failure. A second opinion from Greg’s Japanese Auto confirmed the diagnosis and provided photos showing coolant in the cylinder. Inspected by Manufacturer or Others: Yes. The vehicle was inspected by Honda of Sumner and Greg’s Japanese Auto. No inspection has been done by police or insurance representatives. Warning Lamps or Symptoms Before Failure: Yes. After a recent service (which included an AC repair, fuel pump recall, and oil change), I experienced two misfires in cylinder 4 within 24 hours. All dashboard warning lights came on during one of the incidents. These symptoms began four days after the service. Additional Context: I was quoted $8,100 for the head gasket repair by Honda. I believe this issue could have been detected earlier during the diagnostic service. I’ve since learned of a class action lawsuit involving this exact issue in my vehicle’s generation, which makes me concerned this is a known defect.

Blown head gasket repaired after unknown coolant loss. Eventually intermittent warnings to pull over and slow down which resolved within seconds. Continued until it was determined the gasket had failed. Numerous instances of hybrid engines failing in this manner. Repaired by independent shop.

I was driving on the freeway and my engine lost power and all the lights on my dashboard went haywire. I tried to get off the freeway but with the loss of power made it extremely difficult and dangerous. I thought I was going to get into an accident since my car slowed down so abruptly. I had to limp my way across traffic which was very scary. The car was jerking and shaking. I finally got to the side of the freeway and the car did not want to continue so I called for a tow truck and waited on the side of a busy highway. The tow truck brought my car to the Honda dealership which diagnosed the problem immediately as a blown head gasket. They said it was a known problem and the mechanic knew what to look for. They fixed the head gasket and I have my car back. My car only has 92k miles and I don’t think the head gasket should fail this early in the vehicles life. I properly maintain my engine with routine oil changes. There is no reason the engine should break down like this. I feel that there is a defect in Honda’s head gasket.

Was driving on freeway my car wouldn’t go faster than 45 mph. Check engine light all of a sudden Came on. Cars almost hit me from behind because my car wouldn’t accelerate. Had to pull over at the exit. After pulling over and shutting down the car, I turned car back on and all warning lights came on. I was able to drive slowly to a Honda dealership which was about a mile away. Had to pay for a diagnosis and they discovered that the coolant expansion tank was completely. bubbling emerged from radiator after doing a coolant test. up. The head gasket is leaking and need to be replaced. Cylinder head needs resurfaced

I am writing to express my serious dissatisfaction with the engine head gasket on my 2019 Honda Accord EXL. Following my Honda consultant, I have experienced a engine head gasket malfunction where it has a head gasket crack. This led to leaking into the engine piston which will cost me $5000 to repair. There was no signs and symptoms that the incident was going to happen. I would also say I am a pretty conservative driver when commuting. The ongoing engine issues could potentially lead to serious safety concerns due to overheating, possible engine damage, and safety for others on the road. This problem has not been confirmed by the dealer and on many public forums people have had similar issues with this when there car is fairly new.

The contact owns a 2019 Honda Accord. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline). The contact stated while driving approximately 70 MPH, there was a sputtering sound coming from the front of the vehicle and the vehicle lost motive power. The check engine warning light illuminated, and the "Service Engine" message was displayed. The vehicle was taken to a dealer where it was diagnosed that the fuel system and spark plugs needed to be replaced. The vehicle was repaired but the failure reoccurred two days later. The vehicle was towed to a dealer where it was diagnosed that the cylinder head was cracked and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 108,451.

Mileage: 108,451

Component that failed was the head gasket. Willing to have vehicle inspected. However this incident occurred roughly 7 months ago at 125k miles. Safety was put at risk due to engine overheating which could've caused a fire. I haven't asked the dealer if they've seen it before however this issue is easy to find on forums for this vehicle. The vehicle was only inspected by the dealer who repaired it, I was told by them they had to send off some part of my engine to honda to ensure it wasn't warped before repairing. The ridiculous part was the only warning I received in my car was engine temp high if you ask me such a major failure should cause the check engine light to come one. I had no other warnings than the temp warning. My vehicle doesn't even have a Guage to display the engine temp. To ensure the listed vin shows the correct model I drive a 2019 honda accord hybrid ex with 133,500 miles.

On January 22, 2025, I was driving at highway speed and suddenly my car seemed to lag in power. It slowed from about 60mph to 40mph and pressing on the gas did not do anything. The Check Engine light began flashing. I felt like it would continue to slow down and it was rush hour. I managed to safely exit the freeway and parked the car. I turned it off, waited a moment, turned it back on. It seemed ok so I drove carefully using back streets to the local Honda dealership. They kept the car for 2 days and ran tests but nothing showed on their computer and they could not replicate the problem. They gave me the car back. I saw another recall today for other models of Honda that have this exact problem. My car has 41700 miles on it. The weather was cold but clear. This is the first time this has happened.

Mileage: 41,700

Engine light came on. First time this has happened. Took car immediately to Honda Dealer for inspection of engine light. Was informed that the car had a blown head gasket. Car only had 116000 miles. Car was taken to same dealer where purchased, and serviced constantly. Not once were we notified of any issue with the engine.

The head gasket on the engine has blown at only 94,000 miles. Car overheated on the side of the freeway and I took it to the dealership. Dealer confirmed that the head gasket was leaking. Check engine light and a temp warning came on as the car overheated.

Head Gasket developed holes at 70,000 miles despite all recommended maintenance completed. This can cause serious engine damage which can lead to multiple safety issues

On 6/14/22 and 3/29/23, my 2019 Honda Accord EX Hybrid had engine misfirings which lead to total loss of power on Rt 15 in NY and CT: 6/14/22: Upon entering highway, car bucked during acceleration and lost all propulsion coasting to a stop. Check again light was on and blinking. After reseating gas cap car driven directly to dealer for diagnostic. Car computer did NOT retain any error codes even though engine light was blinking. Dealer did not do any repairs. 3/29/23: Near end of 30 minutes in stop and go traffic, car began to hesitate when inching forward. When accelerating to travel speed, car bucked during acceleration and lost all propulsion coasting to a stop. Check again light was on and blinking. After reseating gas cap car driven directly to dealer for diagnostic. Car computer did NOT retain any error codes even though engine light was blinking. Dealer did not do any repairs. If check engine light indicates get service soon and a blinking light means get it immediately, then there appears to be an issue with Honda's computer diagnostic for not retaining codes. Also the propulsion system for failing which could possibly create safety issues for drivers of this vehicle. I traded the vehicle in for safety purposes and was forced to purchase a new vehicle much earlier than expected.

Hello, I am writing to you about my 2019 Honda Accord Hybrid. This vehicle make and model had over 600,000 safety recalls for the Denso fuel pump. When I Input the vehicle on Honda for recall info, nothing shows up. I took it to a local Honda dealer but they did not check the fuel pump instead told me it was other issues. I was driving my vehicle on the freeway after my first Honda visit and my vehicle suddenly lost power and the check engine light started flashing ( I have videos of this if needed). There was a truck behind me and I almost got hit by the truck which was a significant issue to my safety. I also started to smell gas. These are all signs of a bad fuel pump. I understand that my vehicle does not pop up on the recall with the VIN number but being it the same make and model with similar symptoms, I would like to see what NHTSA can do to inform me of the recall as my vehicle possibly might have a bad fuel pump ( which should be covered under this recall).

The contact owns a 2019 Honda Accord. The contact stated while driving approximately 40 MPH, the vehicle inadvertently stalled. The contact stated that the check engine warning light was illuminated. The contact was able to restart the vehicle after waiting approximately two hours. The vehicle was not taken to a local dealer. The manufacturer was not informed of the failure. The failure mileage was approximately 57,000.

Mileage: 57,000

Vehicle repeatedly experiences a "cylinder misfire error" when driving above 45 mph. The check engine light will flash and the car surges like it is stalling. Loss of the ability to accelerate when it occurs. Also, the car shakes violently when the vehicle comes to a stop before turning off the engine. Many times, after restarting problem temporarily stops. I have taken it to the dealership multiple times, but problem is unsolved. Happens at least once a week. Started at 58,000 miles. More recently, the vehicle experiences a safety system failure when driving above 45 mph. 10 system warning lights were activated and will continually appear on instrument panel. Warning lights activated: 1. Hill Start Assist Problem 2. Adaptive Cruise Control System Problem 3. Collision Mitigation Braking System Problem 4. Road Departure Mitigation System Problem 5. Emission System Problem 6. Tire Pressure Monitor System Problem 7.Brake System Problem 8. Electric Power Steering System Problem 9.Vehicle Stability Assist System Problem 10. Brake Hold System Problem

TL* THE CONTACT OWNS A 2019 HONDA ACCORD HYBRID. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 60 MPH, THE VEHICLE STALLED BUT RESTARTED. THE CONTACT STATED THAT THE BRAKE LIGHTS WERE ILLUMINATED WHILE DRIVING. ADDITIONALLY, THERE WAS AN ABNORMAL REVVING SOUND DETECTED. THE VEHICLE WAS TAKEN TO STOKES HONDA NORTH (8650 RIVERS AVE, NORTH CHARLESTON, SC 29406, (843) 572-4700) BUT WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED NOR INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 10,000.

Mileage: 10,000

SHORTLY AFTER STARTING THE CAR, CAR SHUDDERS WHEN ACCELLERATING OVER 40 MPH. DO NOT MATTER WHICH MODE IT IS IN. ALL LEAD TO ENGINE SHUDDERING AND THE FLASHING CHECK ENGINE LIGHT. WHEN NOT ENGAGED IN ECO MODE, I RECEIVED A NOTICE SAY CANCELING ECON MODE WHEN THE MODE WAS NOT EGAGED, THE TYPICAL PROCESS IS START CAR AND WITHIN A FEW MINUTES, ACCELERATE ABOVE 40 MPH AND WITHIN SECONDS GET A BLINKING CHECK ENGINE LIGHT, A SHUDDERING ENGINE THAT IS SLOWING DOWN BELOW 60 MPG AND GETTING MORE VIOLENT, THIS BEGAN AFTER PICKING UP THE CAR FROM HAVING ROUTINE MAINTENANCE PERFORMED. I KNOW THERE IS OUT FOR THE GENERAL 2019 ACCORD MODEL, JUST NOT MY MODEL, BUT THE FUEL PUMP ISSUE SOUNDS VERY SIMILAR TO WHAT I AM EXPERIENCING WITH MY HONDA ACCORD. THE "SOLUTION" SO FAR IS PULL OVER AND TURN THE VEHICLE OVER AND RESTART IT AND HOPE FOR THE BEFORE, BUT IT ONLY GIVES A TEMPORARY FIX.

Mileage: 59,000

11/24/19 - CAR DIED WHILE DRIVING - VEHICLE BECOME NON-RESPONSIVE WITH REGARD TO ENGINE, WOULD NOT ACCELERATE AND STOPPED DRIVING ALTOGETHER. 1ST CODE SHOWN - POWER SYSTEM PROBLEM DO NOT DRIVE. 2ND CODE SHOWN - 12 VOLT BATTERY CHARGING SYSTEM PROBLEM. DO NOT DRIVE. CAR WAS TOWED TO DEALERSHIP FOR REPAIRS. RETURNED TO SERVICE 11/26/19. 12/5/19 - CAR DIED WHILE DRIVING - VEHICLE BECOME NON-RESPONSIVE WITH REGARD TO ENGINE, WOULD NOT ACCELERATE AND STOPPED DRIVING ALTOGETHER. CODE SHOWN - POWER SYSTEM PROBLEM DO NOT DRIVE. CAR WAS TOWED TO DEALERSHIP FOR REPAIRS. RETURNED TO SERVICE 12/13/19. 12/15/2019 - CAR DIED WHILE DRIVING - VEHICLE BECOME NON-RESPONSIVE WITH REGARD TO ENGINE, WOULD NOT ACCELERATE AND STOPPED DRIVING ALTOGETHER. 1ST CODE SHOWN - CRITICAL FAILURE DETECTED. STOP DRIVING WHEN SAFE. 2ND CODE SHOWN - POWER SYSTEM PROBLEM DO NOT DRIVE. CAR WAS TOWED TO DEALERSHIP FOR REPAIRS.

Mileage: 912