2015 Honda Pilot

On November 8, 2024, the Office of Defects Investigation (ODI) opened Recall Query RQ24013 to assess the scope of Honda recall 23V-751 after receiving complaints that alleged connecting rod bearing failures in vehicles that were not within the scope of recall 23V-751. In November 2023, Honda recalled 248,999 various Model Year (MY)2016–2020 Honda and Acura vehicles equipped with the 3.5L V6 engine. Honda recalled these vehicles due to a crankshaft manufacturing defect that caused premature connecting rod bearing wear and engine seizure. While the out-of-scope failures involved in these complaints appear to have a very similar failure mechanism as the recalled engines, a thorough analysis of all available data from Honda has not indicated that the same manufacturing defect exists in the out-of-scope engines as the engines recalled by 23V-751. Based on this analysis ODI has determined that Honda has properly defined the scope of recall 23V-751. Consequently, ODI will close this RQ investigation.  NHTSA will continue to investigate these complaints of engine failure as part of a new Preliminary Evaluation Investigation (PE25008). The Agency reserves the right to take additional action if warranted by new circumstances.

On July 3, 2026 the check engine light, check VSA warning and check emissions warning indicators all illuminated simultaneously and the vehicle began to misfire and sputter which triggered an immediate slow down of traffic behind me. My local Honda dealership acknowledged a known defect with 2013 - 2015 Pilots in which the piston rings deteriorate leading to cylinder misfires. After system diagnostics they confirmed the spark plugs were damaged due to the piston rings defect causing engine misfires, rough idling, and slow minimal acceleration. This situation absolutely placed me, my family and others on the roadway at immediate risk due to the sudden nature of the engine malfunction. While there were no police report or insurance claims the Honda dealer did inspect and perform diagnostics on the vehicle. However American Honda declined any responsibility and refused to repair the vehicle even though this is a known issue with Honda. Prior to this date there were no warning or indication that the vehicle had any issues.

NHTSA ID

11753531

Incident

Jul 3, 2026

The contact owns a 2015 Honda Pilot. The contact stated that upon pulling into the gas station and parking the vehicle, the vehicle made an abnormally loud sound, and the contact also noticed a grinding sound coming from the underbody of the vehicle. The contact stated that the grinding sound persisted and became louder while reversing out of the parking spot. The vehicle was towed to the residence. The vehicle was then towed to Mavis Tires the following day. The vehicle was inspected and diagnosed with sway bar, suspension, and strut failure. The vehicle was repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 270,000.

NHTSA ID

11743154

Incident

Jun 10, 2024

Mileage

270,000 mi

1. The engine assembly failed — Piston 1 suffered catastrophic failure due to VCM-related piston ring wear and oil sludge buildup, generating DTCs P0301–P0304 (engine misfire, cylinders 1–4). Vehicle is completely non-operational. Failed engine is available for inspection in Mableton, GA 30126. 2. Progressive engine misfire created risk of sudden power loss and loss of vehicle control at highway speeds. Complete engine failure in April 2026 left the vehicle fully immobile, posing an immediate collision risk to the driver and surrounding motorists. 3. Yes. In October 2025, I brought the vehicle to AutoNation Honda on Thornton Road, Georgia, presenting symptoms consistent with Honda Service Bulletin 25-060. The dealership examined the vehicle but took no action and offered no warranty coverage, despite SB 25-060 being fully active at that time. 4. Yes. AutoNation Honda (authorized Honda dealer) inspected the vehicle in October 2025 while Service Bulletin 25-060 was fully active. No repair was performed and Honda has denied all warranty claims. No police or insurance inspection has occurred. Vehicle remains unrepaired and available for NHTSA inspection. 5. Yes. The Check Engine Light illuminated with DTCs P0301–P0304 prior to failure, along with engine misfire, rough idle, and reduced performance. These symptoms were present at the October 2025 dealer visit. No corrective action was taken. The engine progressed to catastrophic Piston 1 failure in April 2026.

NHTSA ID

11737134

Incident

Apr 16, 2025

While driving in traffic the vehicle suddenly began to sputter and lose power with check engine light flashing on the dash board. I was able to pull over and limp the car the one mile to my home on side streets. I parked the vehicle and called for a tow truck to tow the vehicle to my local dealership that I purchased the car from brand new. This is the third time this failure has occurred. The first occurrence was in October of 2023, the second was in November of 2024. The first two repairs were made at a local independent repair shop in the city of Orange ca. the first occurrence was cylinder 1 and the repair shop indicated that this is a common occurrence in this make and model. The report was a replacement of the spark plug and coil pack as oil was found to be in spark plug chamber. The second occurrence was similar but on a different spark plug (I believe number 2 or 3). This occurrence was diagnosed by the dealer and required a replacement of piston rings and major engine repair and oil in spark plug number 2 I believe. In July of 2025 American Honda sent me a notice in the mail of a known defect affecting this vehicle and offered a repair for this exact problem within an extended warranty of 10 years or 150,000 miles whichever is first. This was my first reciept of such information from Honda. The extended warranty however was sent to me after the 10 year warranty was already expired as I has purchased the vehicle new in October of 2014. American Honda then had fine print at the bottom of the notice extending the extension to Jan. 31st 2026. 15 days later my vehicle experienced the acknowledged problem for the 3rd time. In July of 2025 I contacted my dealership and advised them of the letter I had received and asked for an inspection and or repair of the problem listed. The service advisor spoke with his service manager, and they refused to inspect and or repair the vehicle due to no warning light or symptoms occurring at that time.

NHTSA ID

11723907

Incident

Jan 15, 2026

The contact owns a 2015 Honda Pilot. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. In addition, the error message instructed the driver to pull over immediately. The vehicle was towed to the dealer, where it was diagnosed with piston ring failures. In addition, DTC: P0301 (Misfire in Cylinder #1) was displayed. The contact was informed that the piston rings needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 120,000.

NHTSA ID

11721437

Incident

Feb 28, 2026

Mileage

120,000 mi

I bought my 2015 Pilot in 2024 and since then my local mechanic has told me I am burning oil and I have had to replace several spark plugs. I have had error codes like P0304 come up in conjunction with the replacements. I now have a total engine failure. I looked online after my failure and saw the VCM Warranty Extension, but I was never notified about it. I saw where the codes could come up as "misfires" but might actually be the engine failing. Component failure - engine Safety Risk - I was driving when it died. if i had not come to a complete stop i would have hit a snow covered rocky hill. Inspections - awaiting insurance inspector, engine failure confirmed by mechanic. Warnning - no lights were on when it happened.

NHTSA ID

11720683

Incident

Feb 17, 2026

The catalytic converter system on my vehicle is failing prematurely due to the vehicle’s built-in fuel management and energy-saving computer settings. These settings cause excess fuel to be burned and pushed into the catalytic converter, damaging the unit. In addition, this flaw is causing oil to be pushed out of the car, creating both a mechanical hazard and an environmental concern. This is not the result of poor maintenance or misuse — it is a hazard caused by a design flaw in the system itself.

NHTSA ID

11689299

Incident

Sep 3, 2025

See attached document for complaint.

NHTSA ID

11686383

Incident

Jul 8, 2025

Service Bulletin - The piston ring function deteriorates due to ring low wear toughness and sticking from sludge. Oil adheres to the spark plug leading to carbon fouling and misfire. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on.

Service Bulletin - The piston ring function deteriorates due to ring wear and sticking from sludge. Oil from the crankcase adheres to the spark plug leading to carbon fouling and misfire. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on.

Owner Notification Letter - the piston ring function can deteriorate due to ring low wear toughness and sticking from sludge. Oil adheres to the spark plug leading to carbon fouling and misfire. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the Malfunction Indicator Lamp (MIL) to come on.

Service Bulletin - The piston ring function deteriorates due to ring low wear toughness and sticking from sludge. Oil adheres to the spark plug leading to carbon fouling and misfire. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on.

Service Bulletin - The piston ring function deteriorates due to ring low wear toughness and sticking from sludge. Oil adheres to the spark plug leading to carbon fouling and misfire.

Dealer Message - Piston ring effectiveness may be reduced due to excessive wear and oil sludge build-up, which can cause oil to adhere to the spark plug, potentially leading to carbon fouling and misfire triggering DTCs P0301 through P0304 and cause the MIL to come on.