2018 Honda Pilot

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.

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.

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 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 Preliminary Evaluation is being upgraded to an Engineering Analysis, EA25004, to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope for the Engineering Analysis 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 campaigns. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

The contact owned a 2018 Honda Pilot. The contact stated that while driving at an undisclosed speed, the engine was knocking very loudly, and the vehicle lost driving power. The contact attempted to contact the manufacturer. The vehicle was not repaired.

NHTSA ID

11765967

Incident

Sep 21, 2026

Auto restart issues. I have reported this before. When coming to a stop and the engine shuts off it does not automatically restart. It has left me sitting at a light having to sit and wait before I am able to turn my car back on. This can be a huge safety issue when in traffic or when a line of cars is behind me or at any time. I have had services done and computer upgrades in the past and the problem continues.

NHTSA ID

11763783

Incident

Jul 13, 2026

All safety features turned off. I had a professional mechanic shop inspect. Since this happens randomly, they cannot provide exact diagnosis. This is a major safety risk! After I picked it up from the mechanic, I drove approximately 200 miles before the next occurance, while on a major interstate. All safety features turned off again. This is such a danger to all, driver & passengers to be on any roadway without safety features.

NHTSA ID

11763656

Incident

Sep 7, 2026

High Pressure Fuel Pump fails after implementing recall listed below. See recall information: December 18, 2023 NHTSA CAMPAIGN NUMBER: 23V858000 Fuel Pump May Fail Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash. NHTSA ID Number: 23V858000 Manufacturer Honda (American Honda Motor Co.) Components FUEL SYSTEM, GASOLINE Potential Number of Units Affected: 2490460

NHTSA ID

11760641

Incident

Aug 13, 2026

The vehicle started to make some strange noises coming from the engine area. I brought the vehicle to our mechanic, who stated that the engine needs to be replaced. He described the problem as an issue with the piston that is appearing to be common with the shut off system, causing it in this vehicle. He classified as.’Engine has internal knock from wrist pin/rod bearing’. I’m looking at recalls and there are 2018s that appeared to have some sort of rod or piston issue that is under recall. Our particular VIN does not show a recall. This does appear to be a relatively common problem occurring with our model year though.

NHTSA ID

11758136

Incident

Aug 18, 2026

Failed Component: Lane Departure System Camera - Honda (P/N 36160-TG8-A51). This camera has completely failed which completely shuts down the following safety systems in this Honda Pilot: Adaptive Cruise Control Forward Collision Warning Lane Departure Warning Lane Keeping Assistance It also fully disables the cruise control system. I have attempted to have this repaired at our Honda dealership - but parts are on backorder without a known delivery time.

NHTSA ID

11756633

Incident

Oct 15, 2025

When I press down on the gas, the car is delayed in responding. This has gotten increasingly worse, at times resulting in near collisions with on-coming traffic. I've reported this to my local dealership (Priority Honda in Chesapeake, Virginia) but they continue to tell me there are no diagnostic codes that allude to there being an issue and will not review it further. When I took a technician for a test drive and was able to replicate it, the technician said that it was normal that the gas was not immediately responsive. The unresponsiveness happens when I'm trying to get initial momentum (starting at a full stop), when I'm changing from reversing to moving forward, and when I'm already in motion and trying to advance speed.

NHTSA ID

11756203

Incident

Aug 11, 2026

Vehicle was being driven on the interstate going 70-77 mph. First noticed faint knocking sound and loss of ability to accelerate followed by check engine light and multiple system failure notifications. Pulled over on the highway between exits and turned vehicle off to call for assistance. Turned vehicle back on after 10-15 minutes to test, all warnings remained and acceleration was limited but possible. Drove vehicle on side of i70 until reaching an exit and parking for help to arrive. Two children and myself the driver were in the car. Vehicle was inspected and codes ran, but ultimately towed to our local Honda dealership. This event took place on July 18, 2026 causing us to miss a family wedding. The vehicle has been sitting at Penske Honda since then waiting for diagnostic tests to be run, scheduled for August 6.

NHTSA ID

11754624

Incident

Jul 18, 2026

Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button.

Service Bulletin - Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in the transmission indicator flashing “D” and set DTC P0741 Torque Converter Clutch Performance or Stuck OFF.

Service Bulletin - Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in the transmission indicator flashing “D” and set DTC P0741 Torque Converter Clutch Performance or Stuck OFF.

Service Bulletin - Torque converters may not have been manufactured to proper specifications. As a result, the lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in the transmission indicator flashing “D” and set the DTC P0741 Torque Converter Clutch Performance or Stuck OFF.

Dealer Message - Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in the MIL not illuminating. “D” flashes and “Transmission Overheat” message appears setting DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.

Service Bulletin - The AWD warning light is on potentially due to water intrusion into the rear differential pump motor connector area that corrodes the terminals.