Engine stalls or loses power while driving

Risk: 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.

Risk: 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.

Risk: A crack in the fuel pump feed port can allow pressurized fuel to leak out, increasing the risk of a fire.
Remedy: Honda will notify owners, and dealers will replace the fuel pump, if necessary, and install a fuel pump cover, free of charge. The recall began March 14, 2019. Owners may contact Honda customer service at 1-888-234-2138. The recall number for this recall is Q3V.

Risk: Corrosion of the wiring harness can cause increased electrical resistance, unexpectedly activating the vehicle stability assist (VSA) system, increasing the risk of a crash.
Remedy: Honda will notify owners, and dealers will inspect the rear wiring harness and related components, replacing them as necessary, free of charge. Owners may contact Honda customer service at 1-888-234-2138. Honda's number for this recall is KD3.

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 review

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.

THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS INVESTIGATION BASED ON THREE VEHICLE OWNER QUESTIONNAIRE (VOQ) REPORTS ALLEGING A FIRE OCCURRED IN THE INSTRUMENT PANEL.IN ADDITION, THERE WERE THREE VOQ REPORTS ALLEGING A BURNED, MELTED, OR SHORTED HVAC FAN MOTOR WIRING HARNESS.HONDA REPORTS THAT DURING AUGUST AND SEPTEMBER, 2006, IT CONDUCTED A STUDY REGARDING MELTING OF THE HVAC FAN MOTOR HARNESS CONNECTOR.HONDA CONCLUDED THAT THE DAMAGE TO THE HARNESS CONNECTOR COULD RESULT FROM CONTACT BY A PASSENGER'S FOOT OR HANDLING OF THE HVAC UNIT DURING VEHICLE ASSEMBLY.HONDA INSTITUTED CHANGES TO ADDRESS THESE ISSUES.ALL COMPLAINT VEHICLES WERE MANUFACTURED BEFORE HONDA IMPLEMENTED THESE CHANGES.ODI'S ANALYSIS OF THE DATA (BOTH ODI AND HONDA) SHOW THERE ARE SIX REPORTS (DUPLICATES REMOVED) ALLEGING A FIRE IN OR NEAR THE INSTRUMENT PANEL.FOUR OF THOSE RESULTED FROM AN UNKNOWN CAUSE, ONE RESULTED FROM AN HVAC FAN MOTOR FAILURE, AND ONE IS REPORTED TO HAVE BEEN ARSON. IN ADDITION, THERE WERE NINE REPORTS OF HVAC FAN MOTOR HARNESS FAILURE THAT RESULTED IN SMOKE IN THE PASSENGER COMPARTMENT BUT NO VEHICLE FIRE.THE REMAINING FIVE REPORTS RESULTED IN SMOKE IN THE PASSENGER COMPARTMENT AND INCLUDED FAILURES OF THE AIR CONDITIONING COMPRESSOR, HVAC FAN MOTOR, AND A POWER TRANSISTOR.THIS INVESTIGATION DID NOT FIND THAT FAILURE OF THE HVAC FAN MOTOR CONNECTOR, WHICH CAN RESULT IN SMOKE, WOULD ALSO LEAD TO A FIRE.SIMILARILY NO DEFECT TREND WAS IEDNTIFIED FROM EXAMINATION OF THE SIX REPORT