Engine And Engine Cooling Problems of Honda Accord - part 1

Blown head gasket, white smoke from the exhaust. Loss of power. All warning lights on the dash started blinking. Dealer gave estimate of $6500.

See all problems of the 2019 Honda Accord 🔎.

Head gasket failure.

See all problems of the 2022 Honda Accord 🔎.

The contact owns a 2020 Honda Accord. The contact stated that after starting the vehicle the engine was hesitant to start and while driving the flashing check engine light had illuminated and the vehicle did not accelerate past 40 mph. The vehicle was slowly driven to the local dealer who diagnosed that the both the engine head gasket and water pump needed to be replaced. The vehicle was not yet repaired. The manufacturer was not yet contacted. The contact was informed that the VIN was not included in the NHTSA campaign number: 23v858000(fuel system, gasoline). The contact indicated that the vehicle had experienced that same failure listed in the recall. The failure mileage was 100,000.

See all problems of the 2020 Honda Accord 🔎.

The engine stalled on the freeway. Has been having rough idles on cold start. Water gurgling/sloshing sounds coming from behind the dash on cold start. White, sweet smelling smoke periodically comes from the exhaust. Followed up with spark plug replacements. The vehicle still has all previous issues. Upon further inspection coolant reservoir is empty indicated a leak. No leaking fluid has been found. Suggests internal leaking. Issue is likely failing head gasket issue. Bissel v. American Honda CO. Has been suing over this issue. The head gasket is allowing coolant into the cylinders mixing with fuel causing misfires and stalling the engine. Extremely dangerous. Likely to cause accidents.

See all problems of the 2018 Honda Accord 🔎.

Vehicle was being driven on the highway when suddenly engine hesitated and started stalling. Speed was reduced from around 65mph down to the low 40s. Cars were stacking up behind and passing, causing potential hazardous conditions. Vehicle was taken to a mechanic shop and diagnosed with misfiring, after reading obd ii with many alerts coming on. Further diagnostics revealed cylinder head gasket was leaking coolant into engine, as shown by borescope images. This is a known problem on 2018-2020 Honda Accords with both 1. 5t & 2. 0 engines. The multiple alert messages started to come on a few weeks ago, but the engine hesitation and stalling just started this week. At first we suspected a 12v battery issue, but testing confirmed battery was at 12. 8v with no issues.

My car is having issues with the head gasket. My car check engine lights came on like a lit christmas tree with many warnings (emission system, brake system, departure, uphill and many other more). I took my car into capital Honda for a diagnostic on 5/4/26 and they informed that it was the head gasket that needs to be replaced. They are charging me $6000 to repair and do not have the funds to fix. Also I contacted Honda corporate since I read on google that I may qualify for the goodwill program and they said I didn’t qualify since I did not purchase warranty on the vehicle when I got it. I also do see that there is a lawsuit in place for this. I’ve kept up with my car maintenance and never had an issue till now. The car is running rough and it’s shaking a lot. It’s also loosing coolant from the reservoir.

Upon recent repairs completed by an official Honda licensed dealership for the fuel pump due to the related issue of stalling, misfiring, insufficient fuel economy and safety concern. My vehicle has continued to stall, misfire or idle extremely rough. Upon local investigation the error code p0203 and p0303 have populated as the most recent issue. No longer allowing me to drive the vehicle as it remains in limp mode. Previously error codes such as p0304 and p0302 as well as the associated error codes for the injector circuits indicating “open” have previously been detected intermittently and now permanently. In previous events within the last 3 months I have been stranded on highways due to the same stalling, misfiring and limp mode issue after I have previously been inspected by a Honda dealership and promised the issues would resolve. Unfortunately driving at respectable highway speeds and even local city limits my safety as well as my child and spouse’ safety have been put at risk due to the sudden deceleration caused by consistent misfires or limp mode effect which can cause me to have a collision with no warning. I have nearly been in 3 accidents due to this persistent issue.

All lights on head dash are on , all components are not working properly or effected because of this. (engine light brake light abs light tire light traction control light , sensors out all) while driving vechile reduces power does not operate randomly , have to pull over shut the car off and turn it back on. Has high vibrations lot of shaking, stauling. I have had it looked at with multiple shops and dealer . Everybody is playing a guessing game and can not pin point what exactly it is . Was told it was spark plugs and coils, alternator , fuel injectors. All have been repaired, and still have all lights on dash and still facing every problem listed after repairs. Been inspected by manufacturer. Say not been resolved was told if it wasn’t what was already fixed they don’t know and that this is very common right now . It first April 2026 (3) times. May 2 times 2026.

I have a Honda Accord sport 2018 engine 1. 5l turbo(1. 5t) mileage- 97,776 I am reporting a suspected premature head gasket failure which is affecting my vehicle and my mechanic told me this has been going on for a while now with the Accords around my year model. On cold starts, the engine shakes and idles roughly for about 10-20sec. There has been some jerking during acceleration and prior stalling incidents. I have also experienced a blinking check engine light which indicates an active misfire condition. The vehicle has been maintained regularly and have proof upon request. The anti-freeze is leaking inside the cylinder 2 and 3 which is causing the misfires. The check engine light which is blinking is causing safety concern due to potential power loss and the risk of stalling while driving. This issue appears to be widespread among vehicles equipped with the 1. 5t but also around the years of my vehicle. Honda dealership brought it to my attention during the last recall, and my personal mechanic (independent service) diagnosed my car and mention the same thing. I believe this is a manufacturing or design defect and request that NHTSA investigate this issue for potential recall or required manufacturer remedy.

The head gaskets and turbo supercharger goes out at a certain amount of miles.

The contact owns a 2019 Honda Accord. The contact stated that while driving 80 mph, the vehicle unexpectedly lost motive power and stalled with several unknown warning lights illuminated. Additionally, the check engine warning light was illuminated. The vehicle was able to restart; however, there was a cranking sound coming from the vehicle. The contact stated that the failure had reoccurred several times while driving. A mobile mechanic inspected the vehicle and cleared the warning lights. The mobile mechanic retrieved dtc: p0078 (fuel rail pressure failure). The vehicle was not repaired. The vehicle was later taken to the dealer, but it was not diagnosed or repaired. The contact was informed that the failure could not be duplicated and that no fault codes were found. The manufacturer was made aware of the failure. The approximate failure mileage was 97,000.

I am writing to formally report a recurring and serious mechanical issue involving the head gasket in the 2018 Honda Accord equipped with the 1. 5l turbocharged engine. This issue appears to be widespread and poses both safety and financial concerns for vehicle owners. In my experience, the vehicle began exhibiting symptoms consistent with head gasket failure at relatively low mileage. These symptoms included unexplained coolant loss, engine overheating, white exhaust smoke, rough engine performance, and in some cases misfires. Upon inspection and diagnosis, the root cause was identified as a failed or failing head gasket. This failure is particularly concerning because it occurs prematurely and without warning, despite regular maintenance and responsible vehicle use. A head gasket is a critical engine component, and such failures can lead to severe engine damage, sudden loss of power, and unsafe driving conditions—especially if overheating occurs while the vehicle is in motion. Additionally, the cost of repair is substantial, often ranging from several thousand dollars, placing an unexpected financial burden on owners. Many drivers, including myself, rely on these vehicles for daily transportation, and this defect undermines the reliability that is expected from a modern vehicle. There is growing evidence through consumer reports, online forums, and mechanic feedback that this is not an isolated incident but rather a pattern affecting multiple 2018 Honda Accord 1. 5l vehicles. The consistency of these reports suggests a potential design or manufacturing defect related to the engine or head gasket system. Given the safety implications and frequency of occurrence, I respectfully request that the NHTSA investigate this issue further to determine whether a recall or manufacturer accountability action is warranted. Addressing this defect would help prevent further financial hardship and reduce the risk of unsafe driving conditions for affected vehicle owners.

Blown head gasket. This appears to be a widespread issue amongst all 10th gen Honda Accords due to a poorly designed engine by Honda.

1) the cylinder head gasket was “blown” and leaking coolant into cylinder 2. 2) as I was merging into traffic, my vehicle suddenly lost power and entered limp mode and the check engine light began flashing. 3) yes, serviced at the dealer and confirmed 4) inspected by dealer 5) no.

The vehicle began experiencing engine performance problems including rough idling, vibration at startup, and a check engine light. Diagnostic testing indicated a misfire condition. Further inspection suggested coolant intrusion into the engine, consistent head gasket failure. The issue appears to involve the engine cooling and combustion sealing system (head gasket), which is a critical internal engine component. When the problem occurs, the engine runs poorly and may lose power, increasing the risk of stalling or failure while driving, which could create a safety risk in traffic. The problem was confirmed through diagnostic testing at a service center. Compression testing and engine diagnostics were performed, and results pointed toward internal engine issues. No repair has yet resolved the underlying problem. Warning indicators included the check engine light, engine vibration, and rough running conditions, which appeared prior to diagnosis. The issue has been observed consistently since symptoms first began and has not been fully resolved.

Vehicle drove normally in the morning commute. In the afternoon commute it started normally and as I approached highway speeds the alarms started showing up. The brake, hill descent system, abs, critical failure. The vehicle started losing speed and could not accelerate. Losing speed at highway speed was alarming and finally all dashboard went red with alert to stop driving and engine heating warming. Speed was in the range of 35-40 mph on a highway rated 70 mph. I had to pull over and tow car to dealership.

See all problems of the 2025 Honda Accord 🔎.

While driving at highway speeds, the vehicle experienced a sudden jerking and a catastrophic loss of motive power (limp mode). Simultaneously, multiple safety systems failed, including the collision mitigation braking system (cmbs), adaptive cruise control, and road departure mitigation. The vehicle became a road hazard in active traffic. A certified Honda dealership technician inspected the vehicle and confirmed a premature head gasket failure with coolant intrusion into cylinders 2 and 3. The engine is non-drivable and the vehicle is at 84,000 miles. Despite the documented nature of this design defect and its current litigation, american Honda motor CO. Has denied any assistance. The vehicle also has an open safety recall (24-009) for a fuel pump failure which presents identical safety symptoms.

I own a 2018 Honda Accord ex-l with a 1. 5l turbocharged engine. The vehicle began overheating while idling and at low speeds, cooling down when driving at higher speeds. I brought the vehicle to a Honda dealership where a pressure test confirmed internal coolant loss with no external leaks found. The dealership diagnosed a head gasket failure and recommended replacement at a cost of $8,941. The component that failed is the head gasket on the 1. 5l turbocharged engine, allowing coolant to leak internally into the cylinder. My safety was put at risk as the vehicle overheated while in traffic during normal driving conditions, creating a risk of engine failure, loss of power, and potential fire. The problem was confirmed by a certified Honda dealership via cooling system pressure test. A goodwill request has been submitted to american Honda on my behalf. Warning lights appeared on the dashboard twice indicating to turn the vehicle off immediately due to overheating. Symptoms first appeared in April 2026. I am aware of NHTSA TSB mc-10234626-0001 and an active class action lawsuit bissell v. American Honda motor CO. Case no. 3:24-cv-02286 addressing this exact defect on this exact engine.

Driving in a construction zone. Two lane highway and my car immediately went into limp mode. Left me and my children stranded on the side of the road while semis and cars driving 65 mph went past very close to us. Honda knows these Accords have head gasket issues and it is unsafe to be driving them.

The vehicle began to overheat while traveling at fair speeds (35mph) on state road. Thermostat reading increased to h and vehicle note read “vehicle overheating” please park car. Car temperature read over 104 degrees fahrenheit. No check engine light present. Vehicle was parked and turned off to cool.

On April 14th, 2026 we were driving on the road, the car overheated. We shut it off, sat for a few minutes. Started driving again and had to sit in roadwork, within 1 minute the car started to overheat again. We pulled into the gas station, checked coolant levels, all fine. We let the car sit for 20 minutes or so, we tried to turn the car on and the engine started sputtering and all dash lights came on. We got the car towed to a shop, they looked over the car and told us that coolant had leaked into the cylinders and the head gasket was blown but there was no leak in any of the coolant areas. They quoted us over $7000. So we are out of a car while it’s at the shop waiting to get fixed.

Head gasket failure, over heated randomly putting myself and kids unsafe and at risk for accident. Been confirmed by independent service center. Not inspected by police or insurance. Had cylinder misfire a week prior.

Getting 2 cylinder missfire. Possibly connected to head gasket. Radiator fluid dissolved quickly.

The dashboard on the vehicle lights up with multiple error notifications. This puts the vehicle in limp mode. Indicates emissions errors, check engine, lane mitigation, brakes, control system. Per different customers this fault is being caused by either faulty fuel injector, miss fire, bad ignition coils, damage head gaskets, or turbo mechanism faulty. My vehicle has 70,000 miles and others in the chat have less miles that are having similar problems. Head gaskets should not fail so soon with proper maintenance. My obd2 scan code is miss fire which could indicate faulty spark plugs, coil, injector or headgasket. For a vehicle at 70,000 miles this shouldn't happen. Vehicle has been maintained as the manufacturer recommendations.

First I had to replace all injectors and now I have a cylinder 4 misfire and need a head gasket job that’s being quoted at $5000!!! I’ve done all maintenance and upkeep and my car looks new. I’m in Honda groups and this is happening to everyone with the 10th generation Accord that’s 1. 5t engine. This should be a recall! I thought Hondas were the best. This is ridiculous and the car has no life. It’s literally in limp mode.

Pulling out in front of high speed traffic, engine went into safe mode with check engine light. Fortunately a car at high speed avoided rear ending my car. Upon evaluation, dtc code p0303 (cylinder 3 - misfire) was present. Coils and spark plugs were changed but car was still misfiring. Honda has a warranty for 150k/ 10 year on fuel injectors but this VIN was not on list based on Honda service department. The Honda service department evaluated and car has head gasket leak in cylinder 3. This is a widely known problem reported on many Honda owner websites and Honda service acknowledged it was an issue but is not a “recall” despite the potential safety risk on the road when car goes in to protect / shutdown mode. The nature of this issue occurring on a well maintained car with 147k miles that is 8 years old and not being a recall and a safety related item is being reported by me as me and my family could have been impacted by a rear end collision as car shut down / protect mode. This could and likely has occurred to other owners and possibly attributed to accidents and safety of passengers. Honda wants over $11k to repair the car which includes fuel injectors / plugs / coils / new head as they reflect old head can’t be used even if machined / head gasket. This issue is a safety related issue and should be a Honda recall as the head bolts are a known design issue causing premature failure of the head gasket. Submitting this to document my incident, protect the public driving this model and year and hopefully providing information to warrant a recall so that all repairs will be performed under recall warranty. Also to protect the public from a Honda Accord safety issue for 2018 Honda Accord lx.

Blown head gasket.

The contact owns a 2019 Honda Accord. The contact stated that while driving at varous speeds the vehicle the had experience acceleration hesitation and the check engine light had illuminated. Later, while driving the engine went into limp mode and over the vehicle speed did not accelerate above 15 mph. The vehicle was later towed to the local dealer who diagnosed that the fuel injectors were faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline. The contact was informed that the VIN was not included in the NHTSA campaign number: ( ). The contact indicated that the vehicle had experienced that same failure listed in the recall. The failure mileage was 135,019.

The contact owns a 2019 Honda Accord. The contact stated that while at the stop sign to access the feeder road, while accelerating, the lights started flashing on the instrument cluster. The vehicle failed to accelerate above 5 mph. The driver turned on the hazard lights, made a u-turn, and pulled over a block away at a stadium. The vehicle was turned off. The contact retrieved dtc: p0301, p0302, p0304, and p0300. A code reader was used to erase the codes. The vehicle was restarted and driven as designed. While the contact’s wife was driving, the vehicle failed to exceed 5 mph. The vehicle was taken to the dealer for a routine recall repair on the fuel pump and software. The dealer informed the contact that the failure was not related to a recall. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA hotline. The failure mileage was approximately 85,000.

In 2018 Honda Accord with the 1. 5-liter, four-cylinder turbo engine that had a head gasket fail at 110k miles which has been diagnosed and confirmed by local Honda dealer with misfire codes/counts on cylinder 1 due to coolant leaking inside cylinder 1 and 2 due to this bad head gasket. Due to the bad head gasket and coolant leaking into cylinders, this caused the fuel injectors to clog and fail. Creating rough idling and poor engine performance, which could cause car to stall at any point, creating a safety concern for those in the car if stalled/stuck on public roads. Additional discovery information found here of Honda America acknowledging the defect and encouraging dealerships to report this issue with incentives. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Head gasket issue please fix this problem for the customers.

See all problems of the 2021 Honda Accord 🔎.

Head gasket failure was diagnosed by a certified dealer. The only symptom leading up to the failure was slight hesitation when starting the vehicle. Safety issues include sudden engine power loss, engine fire, overheating, and reduced visibility from thick white smoke, and the potential loss of steering or braking power.

We’re driving home when the vehicle suddenly had a significant reduction in power and the car would not accelerate beyond 5 mph. Honda calls it “limp mode”. I was approximately 2 to 3 miles from home. Approximately 20 vehicles swerved passed us at normal road speeds of approximately 50 mph. The only warning light that came on was a flashing “check engine” light. The vehicle towed to elk grove Honda, I initially thought it may the turbocharger because I could hear a grinding sound emitting from that area. Eg Honda diagnosed the issue as coolant leaking into the cylinder, which caused the misfire from a faulty head gasket. It is understood this faulty head gasket issue is part of a California class action lawsuit related to 2018-2022 Honda 1. 5l turbocharged vtec engines.

Head gasket 2 has failed on my vehicle.

I was driving down a 45mph street when my car shut down, complete power failure. Dashboard lit up with all kinds of warnings. It had to be towed to the nearest shop.