Honda Pilot misfire problems

Filed Nov 5, 2026 · Engine, Fuel system · AZ

The manufacturer’s defective fuel delivery system (faulty fuel injectors covered under Honda TSB #19-056) causes severe engine cylinder misfires, dropping the vehicle into an immediate, unpredictable, and sluggish 'limp mode' while driving at highway speeds. This sudden loss of power and acceleration creates a severe traffic hazard, preventing the vehicle from keeping pace with traffic or safely merging. The primary fueling malfunction has also led to cascading damage, sequentially melting and destroying both catalytic converters and prematurely destroying brand-new spark plugs in under 5,300 miles due to raw fuel dumping into the exhaust stream.

Filed Oct 28, 2026 · Engine · FL

Connecting rod spun a bearing/ rod knock Verified le customer's concern regarding an abnormal engine knockır oise. Conducted a diagnostic inspection and confirmed pronounced metallic knocking noise originating from the ower engine assembly. Used a mechanic's stethoscope tr isolate the noise to the crankshaft/connecting rod area technician verified a catastrophic lower-end engine failure. Specifically, the diagnostic notes state: "Connecting rod spun a bearing / rod knock Verified" "Pronounced metallic knocking noise originating from the lower engine assembly" "Testing indicated that the knocking noise was most prominent at cylinder #2, consistent with excessive connecting rod bearing clearance and a spun connecting rod bearing." Furthermore, the computer scan sheet shows zero codes for low oil pressure, engine overheating, or vehicle neglect. The temporary misfire codes listed occurred solely because the technician intentionally disconnected individual ignition coils to isolate the mechanical knocking sound. This precise diagnosis—a spun connecting rod bearing at cylinder #2 due to improper clearance—is the textbook definition of the inherent manufacturing defect that triggered the major the federal safety agency Action regarding Honda 3.5L V6 engines. Because my vehicle was manufactured at the Lincoln, Alabama plant and has been maintained perfectly by Honda its entire life, this failure is undeniably due to a factory structural defect rather than normal wear and tear or owner oversight.

Filed Oct 19, 2026 · Fuel system, Transmission · GA

Took Pilot to Reilly's for FREE diagnostic reading. Showed misfires in cylinders 4 & 5 & random misfires. Then took to Son's Honda and PAID for the same diagnostic readings which were the same. The Pilot drives in a "limp mode" due to the issue. This issue is a known Honda issue for this year and make model. They have granted some Pilots an extended warranty to resolve the known issues. They say mine doesn't qualify even though it is the exact same issue. Defects with their fuel injector system. A secondary issue is the Transmission. We were traveling 2 hours away on the highway when we got a warning to pull over. Our Transmission fluid was too hot. This is another issue I have found to be a common problem with the 2019 Honda Pilot's and their redesign transmission system.

Filed Oct 17, 2026 · Engine · FL

This is the description from my wife, who was driving the vehicle at the time. I was driving and the check engine light came on and the car started to violently shake. I lost the ability to accelerate. Fortunately, I was able to steer the car to safety and use the emergency brake to stop the vehicle. I called the nearest dealership and they told me to turn it off and if they engine warning light came back on, to contact honda to tow it. The light did not come back on so they suggested that I drive it to them, which was only 7 miles away. Within 1/5 of a mile, they same thing happened- check engine light came on, I lost the ability to accelerate and all warning lights came on including brake system failed. I was again able to pull over safely and stop the vehicle. Honda corp. had it towed to the dealership. It was there for 5 days. It was an engine problem. I have uploaded detailed reports for you. After honda shipped the car back to me, the gas pedal was acting strange. There was a grinding/vibrating sensation upon acceleration. Sometimes it does hesitate to accelerate. I brought it to the dealership closest to me. They kept it for 5 days. They told me that the engine misfired but that could be from anything. They were in contact with honda corp. No codes happened even when they drove it 115 miles. I was told to pick it up and return the rental they provided. My concern is for my safety. The cause of the engine issue initially has not been identified to me and I do not feel safe driving this car. Fortunately, both times I could not accelerate there were no other vehicles behind me and I was able to get to safety very quickly and stop the vehicle. However, this was engine failure and should not have happened on a brand new car. We do have a case # with honda corporation and have not heard back from them. They are only reimbursing us for car rental and hotel.

Filed Oct 16, 2026 · Engine · TX

Driving home late Tuesday night October 13, 2026 the car made a severe noise, pulled to side of the road turned car off. The car would not start, the car was towed the next day to the Honda Dealership it was bought from. The car had just been in the Honda shop for routine maintenance. There was no warning lights. The safety concerns being on the side of a busy road. My wife and 2 children had to wake up and come and get me. This Pilot is our primary car the other one is not safe enough and is used for in town driving. According to the dealership it was towed to it was a P0304: cylinder 4 misfire misfire with a brand-new plug and a healthy timing belt, together with a loud engine noise, points to mechanical damage inside the engine. That fits a rod bearing failure.

Filed Oct 13, 2026 · Engine · IL

The motor is misfiring on cylinder 5 due to faulty engine components. The vehicle is available for inspection on request. My safety and children’s are at risk as the cabin fills up with raw fuel fumes and makes you feel dizzy. It is also a huge safety risk that I have a failed motor and not one sensor or computer component came up to warn on the dashboard(aka engine light). The problem was brought to two different Honda dealers and the second one confirmed all this is true and faulty due to the manufacturers. No it hasn’t been inspected because we can’t get corporate to take us seriously or call us back in the right department. There were no warning lights on and it first appeared since the injectors were replaced.

Filed Sep 13, 2026 · Engine · SC

Our pilot is experiencing similar issues found online with catastrophic engine failure due to a misfire caused by a knocking rod. Honda so far has not responded to our claim despite it being a known issue around the same time ours was manufactured.

Filed Sep 2, 2026 · Engine, Fuel system · NY

A critical failure in the direct fuel injection system caused severe engine misfiring, sudden loss of drive power, and a cascade failure that disabled safety systems during vehicle operation. Diagnostic scan confirmed DTCs P0172 (fuel system rich) and P0301 (cylinder 1 misfire). In response to the misfire, the vehicle's computer automatically disabled the Electronic Power Steering (EPS), Vehicle Stability Assist (VSA), and SH-AWD systems (diagnostic codes U0401-68, U0416-68). This is a known manufacturing defect involving internal injector wear and high-pressure fuel pump debris (detailed in Honda TSB 20-100). The sudden loss of engine responsiveness paired with the simultaneous disengagement of traction and steering assists while driving creates an immediate crash hazard. Because Honda currently limits this repair to a 10-year warranty extension rather than a mandatory safety recall, vehicles with low mileage are experiencing sudden safety-assist shutdowns on the road without manufacturer remedy.

Filed Sep 2, 2026 · Engine · NC

On Friday August 21,2026 at approximately 10:00am I departed my house. Approximately 4 minutes later while traveling the engine lost power and began misfiring. Steering and braking capabilities were both reduced. Numerous system failure lights were flashing. The vehicle is currently at the dealership awaiting Honda repair plan.

Filed Aug 24, 2026 · Engine · CA

Was driving vehicle and all of a sudden engine light pops up with no driver codes and the left side of engine starts knocking. I pull into the closest shop. They test a vehicle misfire in cylinder 5 and propose vehicle gets towed to dealership to look at codes. I tow vehicle to dealership for them to tell me rod bearings, crankshaft are bad and need a new engine. Engine was 99k and well maintained with every service record included. I asked about Honda goodwill which they denied me due to vehicle not getting serviced at Honda for oil changes. The rod bearings were recalled on previous Honda models and there is currently an open investigation on 2021 models but no official recall.