2019 Honda Accord: adaptive cruise control problems

Filed Oct 9, 2026 · Fuel system · LA

I am reporting repeated, unpredictable loss of engine power and propulsion in my 2019 Honda Accord Touring 2.0T (approximately 146,000 miles). The exact cause remains UNKNOWN. On XXX, while driving on [XXX] near [XXX], my vehicle suddenly lost acceleration at highway speeds and eventually stalled. The vehicle repeatedly lost power, experienced crank-no-start conditions, and at one point could barely maintain 10 mph. I was stranded and had to have the vehicle transported to a Honda dealership in [XXX]. Diagnostic code P0087 (Fuel Rail/System Pressure Too Low) was recorded multiple times, including at 70–74 mph. Numerous warnings appeared, including emissions, brake system, electric power steering, stability assist, adaptive cruise control, collision mitigation, and road departure mitigation. The unpredictable loss of propulsion creates a serious collision risk, especially on highways and in traffic. The Honda dealership initially could not reproduce the failure. After replacing the spark plugs at my expense, the vehicle was returned to me. Approximately 23 miles later, the malfunction returned, and I immediately brought the vehicle back without clearing any codes. Honda subsequently diagnosed and replaced the high-pressure fuel pump at my expense, but the loss-of-power issue continued. The vehicle previously received Honda’s in-tank fuel pump safety recall repair in May 2025. Despite that recall remedy and subsequent repairs, the vehicle continues to malfunction. The exact cause remains undetermined. The vehicle has been inspected by an authorized Honda dealership. Repair records and diagnostic information are available, and the vehicle can be made available for inspection upon request. I am requesting an investigation into this recurring safety-related loss of propulsion. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 22, 2026 · Electrical, Engine · SC

I am not sure if this would be considered an engine or electrical issue, but my 2019 Honda Accord sport loses power at takeoff. Press the gas all the way to the floor but still lags at take-off. I have to pull over, turn off the engine, restart then go which is a huge safety issue and is very dangerous. Also, all of the dash lights are on which causes all of the safety tools, sport mode, cruise control, all road assist tools, and auto start to be disabled. This has been an issue for about 3 years, and every dealer tells me that there is a recall on these items, but when I look up my vin, it says my vehicle is not included in any of the recalls listed. Even though all of the things happening are signs of the recall issued. Please help me in what I need to do to get my vehicle included in this recall and get my vehicle back to safety requirements.

Filed Sep 5, 2026 · Brakes, Driver assistance · CA

I own a 2019 Honda Accord Sport 1.5T. While operating my vehicle, multiple safety-system warnings appeared on the dashboard at the same time. The vehicle displayed “Brake Hold System Problem,” “Adaptive Cruise Control System Problem,” “Collision Mitigation Braking System Problem,” and “Road Departure Mitigation System Problem,” each instructing me to see my dealer. These warnings concerned me because they involved the braking system and several Honda Sensing safety systems simultaneously. I parked the vehicle and turned the engine off. When I restarted the vehicle, all of the warnings had disappeared and the dashboard appeared normal again, even though no repair had been performed. The vehicle has approximately 72,980 miles. I have photographs documenting the warnings while they were displayed. I am reporting this to the federal safety agency because the problem was intermittent and affected multiple braking and driver-assistance systems at the same time. I am concerned that the systems could malfunction again while driving, including the braking/collision-mitigation system. I would like this incident documented as a potential safety defect involving the 2019 Honda Accord.

Filed Sep 4, 2026 · TX

I am filing this complaint regarding my 2019 Honda Accord equipped with the 1.5L turbocharged engine. The vehicle currently has approximately 190,000 miles. My vehicle has developed a serious engine/drivability problem accompanied by multiple warning lights. The warning lights that have appeared include the Check Engine light, VSA/Traction Control warning, Brake warning, Steering warning, Adaptive Cruise Control (ACC) warning, and Road Departure warning. The diagnostic trouble codes found on the vehicle are: P0300 – Random/Multiple Cylinder Misfire P0302 – Cylinder #2 Misfire P0303 – Cylinder #3 Misfire P219A – Air-Fuel Ratio Variation P0420 – Catalyst System Efficiency Below Threshold I took the vehicle to a Honda dealership for diagnosis. After inspecting the vehicle, the dealership told me that I need a turbocharger. I have never previously replaced the turbocharger on this vehicle. I am concerned that a major turbocharger/engine-related failure on a vehicle equipped with the 1.5L turbo engine, combined with multiple cylinder misfires and an air-fuel ratio variation, could create a significant safety hazard. My concern is not simply the cost of repairing the vehicle. I am concerned about what could happen if the engine suddenly loses power, hesitates, misfires severely, or fails to accelerate while I am driving in traffic or attempting to merge onto a highway. The multiple warning lights are also concerning. When the problem occurs, the vehicle displays warnings involving several systems, including traction control, braking, steering, ACC, and Road Departure. This creates concern that safety and driver-assistance features may be disabled or affected at the same time as the engine problem. The vehicle has approximately 190,000 miles, but I believe mileage alone should not dismiss a potentially recurring safety-related defect, particularly when the vehicle is experiencing multiple engine-related diagnostic codes and the dealership has diagnosed a turbocharg

Filed Jul 11, 2026 · Engine · MD

I am reporting a premature and dangerous failure of the engine head gasket on my 2019 Honda Accord Sport (1.5L Turbo engine, 68,220 miles). While driving, the vehicle suddenly lost power due to severe engine misfires. Simultaneously, the dashboard experienced a total cascade of safety system failures, illuminating warning lights for the Check Engine Light, Electric Parking Brake, Traction Control (VSA), Road Departure Mitigation, and Adaptive Cruise Control. The vehicle currently in the authorized honda dealer where technicians officially diagnosed a blown head gasket leaking coolant into Cylinder 3. This is a widespread, well-documented manufacturing defect with Honda's 1.5L Turbo engines. I request that the federal safety agency launch a formal safety investigation into American Honda for these premature head gasket failures to force a mandatory safety recall.

Filed Jun 18, 2026 · Driver assistance · SC

Complaint Regarding Ongoing Issues After Turbocharger Repair – 2019 Honda Accord I am submitting a complaint regarding ongoing issues with my 2019 Honda Accord after a turbocharger-related repair. The initial diagnostic code associated with the vehicle was P2563 (Turbocharger Boost Control Position Sensor Circuit Range/Performance). After the turbocharger/wastegate repair, my vehicle began displaying multiple system warnings, including: * Emissions System Problem * ACC (Adaptive Cruise Control) warning * Collision Mitigation System warning * Lane Departure/Lane Keeping Assist warning * Electric Power Steering warning * Stability/traction control warnings * TPMS (Tire Pressure Monitoring System) warning After the repair, the vehicle began jerking and experiencing a loss of power. Multiple warning lights appeared. While the warning lights temporarily cleared after a couple of vehicle restarts, they later returned and continue to reoccur. I subsequently took the vehicle to Honda, where I was informed that a sensor required recalibration. Despite having the sensor recalibrated, the issues have continued, and the warning lights continue to return. I am requesting that Honda investigate whether the repair, wiring, sensors, modules, calibration, or the turbocharger system itself may have contributed to these ongoing problems. I have also noticed that many Honda Accord owners are reporting similar turbocharger-related issues and multiple warning lights appearing. This appears to be a very common issue among affected vehicles, and I believe it warrants further investigation to determine if there is a larger underlying problem affecting these vehicles. I am requesting that Honda review this matter, document these concerns, and provide a proper resolution. Thank you for your attention to this matter.

Filed Apr 6, 2026 · Engine, Fuel system · 137,708 miles · LA

The contact owns a 2019 Honda Accord. The contact stated that while operating the vehicle, several unknown warning lights illuminated. Additionally, the tire pressure monitoring system, Emissions system, ABS, and electric power steering warning lights were illuminated. Additionally, there were alerts for the adaptive cruise control, collision mitigation, and road departure systems displayed. The vehicle was taken to a mechanic, where it was diagnosed with fuel injection failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 137,708.

Filed Apr 3, 2026 · Driver assistance, Electrical · TX

All my warning lights are on. Drives fine but I can’t use cruise control or any safety features. Replaced the module but they said I need it synced with my vin???

Filed Feb 9, 2026 · Fuel system · FL

This 2019 Honda Accord was part of the fuel pump recall that occurred in 23/24. The vehicle was taken in and had the fuel pump fixed at the dealership under the recall. From that point we have begun to have issues with the fuel injectors. The vehicle started to run rough, and then all of the dash lights came on. All accessory items, Lane Departure warning, adaptive cruise control, etc, all stay on as if malfunctioning. The vehicle was taken into dealership and diagnostic was run, results was two failing fuel injectors. Calls were placed to Honda and request was made to have them assist in a goodwill repair since so many of these vehicles are experiencing the same issue after the recall repair was made. Honda did a review of the diagnostic report and reported problem and stated that the vehicle fell outside of the warranty on the fuel injectors, and that they would not honor any assistance in repairs. They stated case was closed and no further conversations could be had. I mentioned that I knew that they had issued an extended warranty on 2016-2019 Honda CRV's and Civics for the fuel injectors up to 150,000 miles. They stated that my vehicle VIN did not fall within those, which I acknowledge. Vehicle is still malfunctioning and we will be responsible for the repairs, even though this is a well known issue after the fuel pump recall repair. It was stated that we will just need to fix the repairs on our own, which is over $2000 and that, if in the future, there is a recall or extended warranty offered then we could try and speak with them about possibly getting our money back.

Filed Oct 7, 2025 · Driver assistance · AL

In 2 instances the car put on brakes for no reason. Nothing was in front of car. I was traveling roughly 70 mph and car slowed down and brake indicator came on, also going 75 with cruise control on and the system that brakes the car slowed the car down and then just quit working. Warning lights came on saying system failure but after car was turned off then turned back on there were no warnings.

Filed Oct 3, 2025 · Driver assistance · NY · crash

Wednesday 10/01/25 I was driving to work on the highway with cruise control on, it was a empty road with nothing in front or behind me, my steering wheel got yanked out of my hands and turned all the way to the right towards the guard rail, then the steering wheel got yanked all the way to the left automatically, I did a 180 degree spin and crash my 2019 Honda Accord Touring 2.0L. I believe the Lane Keeping Assist System (LKAS) was at fault as well as the Collision Mitigation Braking System (CMBS). The vehicle got towed off the highway directly to a local body shop. The vehicle is available for inspection upon request. Mine and others safety was put at risk because the vehicle decided to crash itself potentially killing me or other people. The vehicle just arrived at the body shop and no diagnosis has been done yet. The vehicle is not drivable so the problem has not been reproduced. Vehicle has not been inspected and looked into yet, I am waiting for the body man to do a deep dive into it or I am planning on bringing it back to the dealership. There was no warning lamps present.

Filed Sep 22, 2025 · Brakes, Engine · CA

I bought this car used in August 2022. September 2022, I paid for diagnostics because every warning light was on. They returned the car and the warning lights were clear. They eventually reappeared. I called, complained and was told I would need to pay for another diagnostic. This has been an ongoing problem. The lights are: Collision Mitigation, braking system problem. TPMS system problem, check tire pressure. Brake System problem, brake performance may be reduced. Brake system, brake hold system problem, apply brake when stopped. Electric power steering system problem, steering assist reduced. Vehicle stability assist system problem, reduced traction and handling. Hill start assist problem, vehicle may roll upon brake release. ACC, adaptive cruise control system problem. Road departure mitigation system problem. Emission system problem, avoid heavy acceleration and high speed. When the battery is disconnected for 15 minutes, then reconnected the lights clear, only to reappear within a few miles of driving. This is very concerning. My teenager will be driving soon and this is an unacceptable safety issue.