NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
31 reportsClear category filterMileage unknown · May 27, 2026
EngineFuel/propulsion SystemPower Train
I am formally requesting a neutral third-party arbitration review under the Magnuson-Moss Warranty Act to compel American Honda Motor Co. to provide a permanent mechanical remedy—specifically, the sourcing and installation of a brand-new, redesigned engine assembly (Engine #Four)— This vehicle frame is now on its third engine bl…
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I am formally requesting a neutral third-party arbitration review under the Magnuson-Moss Warranty Act to compel American Honda Motor Co. to provide a permanent mechanical remedy—specifically, the sourcing and installation of a brand-new, redesigned engine assembly (Engine #Four)— This vehicle frame is now on its third engine block. Car was bought 11/30/2024. At Grubbs Acura, fuel pump safety recall that involves flashing/re-calibrating the Engine Control Unit (FI-ECU) software was done. Just a few weeks after new fuel pump, the vehicle displayed sudden stalling symptoms. The engine suffered a terminal, catastrophic internal collapse. The vehicle was towed to Grubbs Acura where Corporate Honda directed a forced out-of-pocket internal engine teardown. The physical teardown explicitly confirmed a catastrophic connecting rod bearing failure (spun bearing) identical to the structural manufacturing flaws currently under active federal investigation by the NHTSA under Preliminary Evaluation PE25008 / RQ24-025. Corporate Honda subsequently issued a verbal agreement to fully reimburse my out-of-pocket teardown fees. Because a manufacturer will never fund diagnostic labor if evidence of owner fault is present, this corporate reimbursement serves as formal validation that no owner maintenance neglect occurred, and that the engine died exclusively from an inherent component defect. Gunn Acura (San Antonio, TX) confirmed with my vin, that Engine #3 was a warranty/dealer-installed replacement unit at 22,000 miles. It failed after less than 40,000 miles of total operation. A professionally manufactured and dealer-installed engine is reasonably expected to last well beyond 40,000 miles. The manufacturer network cannot utilize arbitrary part-ownership rules or uncooperative, fragmented dealer communications. The original factory-installed engine and the dealer-installed replacement engine both suffered identical connecting rod bearing failures.
NHTSA ODI #11740358
Mileage unknown · Feb 17, 2026
Engine
My engine has been replaced under warranty for connecting rod bearings failing before the recall 23V-751 existed. 40,000 miles later it failed again. I have paper work and other information available upon request. The vehicle is currently on it's third short block replaced by Acura. No CEL or anything prior to when the knocking …
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My engine has been replaced under warranty for connecting rod bearings failing before the recall 23V-751 existed. 40,000 miles later it failed again. I have paper work and other information available upon request. The vehicle is currently on it's third short block replaced by Acura. No CEL or anything prior to when the knocking started.
NHTSA ODI #11718417
Mileage unknown · Nov 6, 2025
EnginePower Train
In 2022, my 2019 Acura TLX A-Spec received a warranty engine replacement due to a spun bearing. At that time, recall 23V-751 (connecting rod bearing defect) did not yet exist. Recently, the replacement engine developed a pronounced knocking/ticking noise at idle and during light acceleration. Multiple independent mechanics and a…
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In 2022, my 2019 Acura TLX A-Spec received a warranty engine replacement due to a spun bearing. At that time, recall 23V-751 (connecting rod bearing defect) did not yet exist. Recently, the replacement engine developed a pronounced knocking/ticking noise at idle and during light acceleration. Multiple independent mechanics and an Acura service department confirmed the noise is abnormal and consistent with connecting rod bearing wear as described in the recall. Acura advised that my VIN is not included in the recall because the original engine was replaced. However, the replacement engine was supplied by Acura prior to the recall and may contain the same defective components. The dealership and Acura corporate did not inspect the internal components or verify whether the replacement engine used the revised bearing parts — they only referenced the VIN and engine number to deny recall eligibility. I currently have an open case with Acura, and the vehicle is scheduled for diagnostic inspection. I was informed that if the issue is determined to be related to recall 23V-751, diagnostic costs may be reimbursed, but there is no guarantee. This situation raises concern because my symptoms, timeline, and component failure are consistent with the known defect, yet my vehicle remains excluded from coverage. Given the safety implications of possible engine seizure or loss of power while driving, I am requesting that NHTSA review whether vehicles with Acura-supplied replacement engines should also fall under recall 23V-751. All service records and warranty history with Acura are available for review upon request.
NHTSA ODI #11697869
Mileage unknown · Oct 3, 2025
EngineForward Collision Avoidance
Im not sure what fails but the car wont start after coming to a stop with the auto off function and almost caused an accident because when the light turned green i couldnt take off because the car didnt start up and the car behind me almost hit me. It has happened other times at stop signs and any other stop ive made. I have to …
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Im not sure what fails but the car wont start after coming to a stop with the auto off function and almost caused an accident because when the light turned green i couldnt take off because the car didnt start up and the car behind me almost hit me. It has happened other times at stop signs and any other stop ive made. I have to press the button my self to start up again. I havent had it inspected because i havent had any time. There are no warning lights on
NHTSA ODI #11691244
Mileage unknown · Sep 27, 2025
Engine
I am writing to formally request assistance with a premature engine failure on my 2019 Acura TLX A-Spec 3.5L (VIN: [XXX] , Mileage: 95k I have consistently followed Acura’s recommended maintenance schedule, as documented by my service history. My vehicle was also serviced under [insert recall number if you have it] at [insert…
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I am writing to formally request assistance with a premature engine failure on my 2019 Acura TLX A-Spec 3.5L (VIN: [XXX] , Mileage: 95k I have consistently followed Acura’s recommended maintenance schedule, as documented by my service history. My vehicle was also serviced under [insert recall number if you have it] at [insert dealer name], as required by Acura, and I have attached records confirming that the recall work was performed. Despite this compliance with all required maintenance and recall service, my vehicle has experienced a serious engine malfunction. This failure appears to be related to the same type of connecting rod bearing or crankshaft issue currently under investigation by the National Highway Traffic Safety Administration (NHTSA Preliminary Evaluation PE25008), which covers the 2018–2020 Acura TLX with the 3.5L V6 engine. Given that: •I have properly maintained the vehicle as recommended. •The recall repair was performed, yet the engine failure still occurred. •NHTSA is investigating this exact issue as a potential defect affecting safety and reliability. I am respectfully requesting goodwill coverage for the full cost of the necessary engine repair or replacement. If Acura is unable to offer immediate coverage, I request that this case remain open and that I be considered for reimbursement should a recall or service campaign be issued as a result of the ongoing NHTSA investigation. I chose Acura for its reputation for reliability, and I trust that Acura will stand by its customers when a serious issue like this occurs. I look forward to your timely response so we can resolve this matter promptly. Thank you for your attention and assistance. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI #11690124
Mileage unknown · Sep 27, 2025
EngineCrash
My vehicle had an engine rod bearing issue before the 1st recall, they replaced part of the engine. My vehicle also went through a starter recall and they also changed the rod bearing with the corrected part that was in for the last recall. Currently, my engine is still having the exact same rod bearing issue which is a safety c…
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My vehicle had an engine rod bearing issue before the 1st recall, they replaced part of the engine. My vehicle also went through a starter recall and they also changed the rod bearing with the corrected part that was in for the last recall. Currently, my engine is still having the exact same rod bearing issue which is a safety concern for me. It’s currently at Ed Voyles Acura in Chamblee, GA waiting on a decision from corporate Acura. They will determine if they will pay for the repairs of my vehicle due to an old recall. This is the worse experience I have had with the Acura brand and I have had 3 Acuras in my life time. I think Acura is a beautiful car company with great performance. I would love if this situation would allow me a rental until my vehicle is fixed. Thank you.
NHTSA ODI #11690121
Mileage unknown · Aug 26, 2025
Engine
This car suffers from the engine and rod bearing recall. I took the car to Park Avenue Acura to complete the recall work. The car had significant damage from the rod bearing issue and the dealership had the car for a month. They replaced the rod bearing, crank shaft, regular fuel pump among other things. Once I received the …
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This car suffers from the engine and rod bearing recall. I took the car to Park Avenue Acura to complete the recall work. The car had significant damage from the rod bearing issue and the dealership had the car for a month. They replaced the rod bearing, crank shaft, regular fuel pump among other things. Once I received the car, the car failed and became inoperable. This time the high pressure fuel pump became defective. While Acura representative informed me that there is (i) active recall on the high pressure fuel pump (but not on my vin) and (ii) direct impact of replacing regular fuel pump on leading to high pressure fuel pump failure, as my vin is not currently acknowledged, my repairs would not be covered. I would like to request that the scope of the VIN numbers be re-evaluated and secondly the impact of fuel pumps replacement leading to other fuel pump be evaluated such that the recall work can cover both issues related to the rod bearing.
NHTSA ODI #11683167
Mileage unknown · Aug 19, 2025
Electrical SystemEngineUnknown Or Other
High pressure fuel pump failure. Car not functional and every warning light started to light up. The car just was serviced for rod bearing (entire crank shaft needed replacement) and regular fuel pump recall replacement which took the dealership almost a month to complete. I spoke to Acura representative who indicated that wh…
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High pressure fuel pump failure. Car not functional and every warning light started to light up. The car just was serviced for rod bearing (entire crank shaft needed replacement) and regular fuel pump recall replacement which took the dealership almost a month to complete. I spoke to Acura representative who indicated that when either of the fuel pump or high pressure fuel pump is replaced, the other pump could fail. I'm not sure why both of the fuel pumps (standard and high) are not both replaced as part of the recall if there is substantial damage as was my case. Also, please note that there is an active high pressure fuel pump recall on my car, just not my vin.
NHTSA ODI #11681642
Mileage unknown · Jul 5, 2025
Engine
The dealership (Rollit Motors at 60 N Gilbert Rd, Mesa, AZ 85203) appears to have listed the same vehicle—a 2019 Acura TLX with VIN [XXX] two different listings with significantly different mileage and pricing. •One listing shows 58,703 miles priced at $24,990. •Another shows 85,233 miles priced at $21,995. •Both listings use t…
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The dealership (Rollit Motors at 60 N Gilbert Rd, Mesa, AZ 85203) appears to have listed the same vehicle—a 2019 Acura TLX with VIN [XXX] two different listings with significantly different mileage and pricing. •One listing shows 58,703 miles priced at $24,990. •Another shows 85,233 miles priced at $21,995. •Both listings use the same exact VIN and show identical exterior/interior colors, trim (3.5L Technology Pkg w/A-Spec), and photos of the same car. When I contacted the dealership, they verbally confirmed “this is the only one we have left” but did not clarify the mileage discrepancy. I have screenshots of both listings and the dealership’s communication. I believe this may be an attempt to roll back mileage or misrepresent vehicle condition to inflate the value, which is potentially odometer fraud. Please investigate this VIN and dealership’s advertising practices. I can provide additional evidence if necessary. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI #11671364
Mileage unknown · Jun 27, 2025
Engine
The engine seized due to failed cylinder rod and/or Engine bearing. This model has had a recall for the exact same issue in the past. It has been repair from when the previous owner had the car. Now this exact same issue occurred on 06/09/2025, after a month of driving the vehicle. I was driving and in the middle of nowhere my e…
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The engine seized due to failed cylinder rod and/or Engine bearing. This model has had a recall for the exact same issue in the past. It has been repair from when the previous owner had the car. Now this exact same issue occurred on 06/09/2025, after a month of driving the vehicle. I was driving and in the middle of nowhere my engine stopped working and it was hard to steer, couldn't accelerate, car was in motion and had to safely pull off the road. I was stranded in the Las Vegas heat, in Henderson, in the middle of no where for 5 hours. The vehicle is getting repaired at a local repair shop with a replacement engine but I'm unsure if the newer engine has had the recall service done to it or not, so there is a potential possibility that this issue can occur again. I've had to spend 400 including deductible to repair the vehicle and is being repaired with the help of my warranty. I did not get any warnings on dash or anything.
NHTSA ODI #11669838
Official recalls
6May 21, 2026
Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.
Consequence & remedy
Consequence: Air bags that deploy unintentionally during a crash increase the risk of injury.
Remedy: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed July 7, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are BOL, WO9, OOA, WOM, XOH, NOC, POD, BOE, UOF, POB, EOG, AOI, QO8, TOJ, DO7, and SOK. This recall expands previous NHTSA recall number 24V064. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning May 29, 2026.
Dec 18, 2023
Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.
Consequence & remedy
Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Remedy: Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KGC and KGD. This recall is an expansion of NHTSA recall numbers 21V-215 and 20V-314.
Nov 13, 2023
Honda (American Honda Motor Co.) is recalling certain 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2016 and 2018-2019 Pilot, 2017 and 2019 Ridgeline, and 2018-2019 Odyssey vehicles. Due to a manufacturing error, the connecting rod bearing in the engine may wear and seize, damaging the engine.
Consequence & remedy
Consequence: A damaged engine may run improperly or stall while driving, increasing the risk of a fire, crash, or injury.
Remedy: Dealers will inspect and repair, or replace the engine as necessary, free of charge. Owner letters were mailed March 28, 2024. 2016-2017 Acura MDX owner letters were mailed November 1, 2024. 2016-2020 Acura MDX owner letters are expected to be mailed in mid-December 2024. Honda began mailing owner notification letters as of March 18, 2024. 2015-2016 Acura owner letters are expected to be mailed mid-December 2024, 2018 Acura TLX owner letters are expected to be mailed the end of March/early April 2024, 2019 Acura TLX owner letters are expected to be mailed mid-May 2024, 2020 Acura TLX owner letters are expected to be mailed mid-June 2024, and 2016-2020 Acura MDX owner letters are expected to be mailed January 27, 2025. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XG1 and GG0.
Mar 25, 2021
Honda (American Honda Motor Co.) is recalling certain 2019-2020 Acura MDX, MDX Sport Hybrid, RDX, TLX, Honda Accord, Civic Hatchback, Insight, 2019 Acura ILX, Honda Accord Hybrid, Civic Coupe, Civic Coupe Si, Civic Sedan, Civic Sedan Si, Civic Type R, Fit, HR-V, Odyssey, Passport, Pilot and Ridgeline, and 2018-2019 CR-V vehicles. The low-pressure fuel pump inside the fuel tank may fail.
Consequence & remedy
Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Remedy: Honda will notify owners, and dealers will replace the fuel pump assembly, free of charge. Owner letters were mailed May 18, 2021. Owners may contact Honda customer service at 1-888-234-2138. Note: This recall is an expansion of recall 20V-314.
Apr 12, 2019
Honda (American Honda Motor Co.) is recalling certain 2018-2019 Acura MDX and Honda Pilot vehicles and 2019 Acura RLX, RLX Sport Hybrid, TLX and Honda Odyssey and Ridgeline vehicles. The timing belt teeth may separate from the belt.
Consequence & remedy
Consequence: Teeth separation from the timing belt may result in an engine stall, increasing the risk of crash.
Remedy: Honda will notify owners, and dealers will inspect the vehicle and replace any affected timing belt free of charge. Vehicles receiving a replacement timing belt will also have the engine inspected and any damaged components will be replaced for free. The recall began June 7, 2019. Honda owners may contact customer service at 1-888-234-2138. Honda's number for this recall is L4M. Acura owners may contact customer service at 1-888-234-2138. Acura's number for this recall is Z4L.
Jan 29, 2019
Honda (American Honda Motor Co.) is recalling certain 2016-2018 Acura MDX, 2015-2019 Acura TLX and 2015-2017 Honda Accord vehicles, equipped with a 3.5L V6 engine. Particulates in fuel may adhere to the internal components of the fuel pump, reducing its performance.
Consequence & remedy
Consequence: Reduced fuel pump performance can result in an engine stall, increasing the risk of crash.
Remedy: Honda will notify owners, and dealers will update the fuel injection engine control unit (FI-ECU) software and, if necessary, replace the fuel pump, free of charge. The recall began March 25, 2019. Owners may contact customer service at 1-888-234-2138. Acura's recall number for this recall is P3W. Honda's recall number for this recall is N3X.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
3PE25008 · Engine Failure
Opened Aug 20, 2025 · No close date supplied
Status: open (inferred from source dates) · Engine
The Office of Defects Investigation (ODI) has received 414 reports of connecting rod bearing failures in the 3.5L V6 engine used in the following vehicles: Model Years (MY) 2018-2020 Acura TLX, MY2016-2020 Acura MDX, MY2016-2020 Honda Pilot, MY2018-2020 Honda Odyssey, and MY2017-2019 Honda Ridgeline. The subject engine failures were analyzed as part of a Recall Query (RQ24013). It was determined that these engine failures are outside the scope of Honda Recall 23V-751. Further, evidence gathered in conjunction with RQ24013 does not suggest this failure is caused by the same crankshaft manufacturing defect that is addressed by Honda in Recall 23V-751. Based on analysis of data from RQ24013, NHTSA has closed that investigation. The significant number of reports of engine failure in vehicles outside the scope of RQ24013 presents a potential safety risk that warrants further investigation. ODI is opening this Preliminary Evaluation (PE) to further evaluate the scope and severity of the potential problem and to fully assess the potential safety-related issues. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.
EA25004 · No Restart After Auto Start/stop Engages
Opened Mar 26, 2025 · No close date supplied
Status: open (inferred from source dates) · Engine And Engine Cooling:engine; Engine And Engine Cooling:engine:crank/camshaft Position Sensor; Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software; Engine And Engine Cooling:engine:hard Parts Internal/mechanical
On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.
Additional source detail variants (4)
Engine And Engine Cooling:engine:crank/camshaft Position Sensor
On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.
Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software
On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.
Engine And Engine Cooling:engine:hard Parts Internal/mechanical
On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.
Engine And Engine Cooling:engine
On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.
RQ24013 · Engine Failure
Opened Nov 8, 2024 · Closed Aug 20, 2025
Status: closed (inferred from source dates) · Engine
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.