Honda Odyssey knocking problems

Filed Nov 2, 2026 · Engine · IN

I was driving and my check engine. Light came on, the car was slow to accelerate. I pulled over and I had it towed to a honda dealership, the closest one. They diagnosed it with needing a transmission replacement and replaced a transmission. Then, after the transmission was replaced, suddenly there was a knock in the engine. The dealership sent me a video with them. Revving, the engine very strongly, and I couldn't really discern any knocking noise, but the engine revving was excessive. Then, I asked for an additional video to try and hear what they were hearing. They sent me another video where there was a clear knock. This did not get disclosed to me at all, because they said it was hard to get it into, because it wasn't really accelerating, they couldn't barely get it into the bay after the cart was towed to the facility. If the cart was making a knocking noise at that moment, it should have been noted initially, but it was not noted until after the transmission was replaced. I never had a knocking sound prior to having my car. Delivered to this dealership.

Filed Oct 31, 2026 · Engine · MD

My 2018 Honda Odyssey suffered a catastrophic engine failure while I was driving to work on the morning of XXX. I had my vehicle towed to Safford Brown's Honda in [XXX]. According to my service rep at the Honda Dealership, the failure was due to the connecting rod bearings. After some research, I found that the V6 Engines for Honda had a recall on them in 2023, Recall No. 23V751000. I called corporate Honda, and spoke to a rep ([XXX]) there, she said that my VIN was excluded from the recall, and that the recall only affect those engines built at a certain factory. Further research found that the federal safety agency opened a broader 1.4-million vehicle probe because engines built outside that original plant and timeline are suffering identical catastrophic rod bearing failures, like what I just experienced. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 27, 2026 · Engine · TN

One of the engine main bearings failed at a little over 27k miles. There was a knocking noise on the lower part of the engine. The engine could have possibly failed leaving me stranded. Yes the dealer was able to replicate the noise and replace the main bearing. No it hasn’t been inspected since I’ve had it. There were no warning signs other than the knocking noise and loud idling.

Filed Sep 23, 2026 · Engine · KY

I am reporting a severe engine issue on my 2019 Honda Odyssey that matches the exact failure profile of the federal safety agency Recall 23V‑751 and the ongoing investigation PE25008 / RQ24-013. While driving, the vehicle randomly began experiencing a loud, progressive metallic knocking and ticking noise from the engine, sometimes it was a squeal, the engine stalled while in motion and wouldn't drive anymore. This presents a severe safety hazard, as an unexpected engine stall or failure while driving increases the risk of a crash. My VIN currently shows as "excluded" from Recall 23V‑751. However, given that this vehicle has the exact same 3.5L V6 engine and is exhibiting the textbook symptoms of premature connecting rod bearing wear and crankshaft-related failure, I request that the federal safety agency review this case to expand the recall parameters to include my vehicle batch.

Filed Sep 22, 2026 · Engine · 50,000 miles · TX

The contact owns a 2020 Honda Odyssey. The contact stated that while driving 45 MPH, the contact heard a knocking sound coming from the engine, and the vehicle went into LIMP Mode with the low oil warning light illuminated. The contact became aware of a burning odor coming from under the hood, and the vehicle needed to be towed. The vehicle was towed to the dealer, where it was diagnosed and determined that the connecting rod bearings had failed and the engine needed to be replaced. The vehicle was not repaired. The failure mileage was approximately 50,000.

Filed Sep 17, 2026 · Engine · CA

crankshaft/rod bearing defect that is causing an audible knocking noise in the engine and located metal shavings in the oil.

Filed Sep 15, 2026 · Fuel system · FL

On September 14, 2026, my 2020 Honda Odyssey experienced a sudden, severe low-pressure fuel pump failure while idling/parked. The engine began running extremely rough, surging repeatedly between 300 RPM and 1,000 RPM, knocking, and stalling. I was parked at the time, preventing a severe accident. Upon trying to restart, the vehicle turned over multiple times and would only catch when depressing the accelerator pedal, accompanied by cylinder knocking and an engine thermal spike. The vehicle was towed to an independent repair facility (Tuffy Auto Service). The diagnostic scan confirmed DTC P0087 (Fuel Rail/System Pressure - Too Low). A mechanical gauge test showed the low-side fuel pressure dropped to 10 PSI (far below the standard operating pressure of 50–60 PSI). The shop verified that the in-tank low-pressure fuel pump assembly failed internally and requires complete replacement. This failure, symptom pattern, diagnostic code (P0087), and component match the exact defect profile in the federal safety agency Recall 23V‑858 (Denso Low-Pressure Fuel Pump Impeller Failure). However, when checking my VIN, American Honda claims this specific vehicle is excluded from the recall range. American Honda Consumer Relations subsequently refused goodwill assistance due to non-dealer service history and vehicle resale status. This creates a severe safety hazard. A vehicle experiencing a sudden drop to 10 PSI fuel pressure while driving in traffic will lose motive power, stall unexpectedly, and disable power steering and braking assist. I am submitting this report because American Honda has failed to include all affected production batches in Recall 23V‑858. I request the federal safety agency expand Recall 23V‑858 to include out-of-range 2020 Honda Odyssey VINs exhibiting identical low-side fuel pump failures.

Filed Aug 5, 2026 · Engine · CA

Hello, my 2019 Odyssey 3.5L V6 engine has a severe knocking noise/engine failure identical to Recall 23V‑751, but my VIN was excluded. The car has only 81,100 miles and started the knocking out of no where a week ago. I had an independant mechanic take a look at it and he said the same thing that it was the connecting rod bearing and the knock was coming from the engine. I dont think it is fair that I should be held liable for an engine repair that is a factory fault and just becuase my vin number is not inlcuded. The vehicles oil was also just changed at the dealership prior to the knock starting. Please have this strongly considered to have HONDA cover this repair.

Filed Aug 4, 2026 · Engine · IL

The connecting rod bearings failed, resulting in engine damage. The failed bearings, crankshaft, and oil pan debris have been retained and are available for inspection on request. The vehicle developed a loud ticking noise from the engine. A Honda dealer initially diagnosed the noise as coming from the timing belt tensioner and replaced the timing belt and tensioner. The noise was unchanged after that repair. The dealer then traced the noise to the bottom end of the engine and performed a teardown on 07/16/2026, which confirmed connecting rod bearing failure with significant metallic debris throughout the oil pan. The dealer documented the failure with photographs. The engine is not driveable. The problem has therefore been confirmed by an authorized dealer through disassembly. The manufacturer has been notified but has not physically inspected the engine. There has been no police or insurance involvement. Warning symptoms: an audible ticking noise from the engine was the only symptom. No warning lamps, dashboard messages, or other indications appeared at any point before or during the failure. Safety: this failure mode is the subject of the federal safety agency Preliminary Evaluation PE25008, opened 08/20/2025, covering connecting rod bearing failures leading to complete engine failure in the 3.5L V6, including MY2018-2020 Odyssey. It is also the failure mode described in Recall 23V‑751, which states that engine failure may cause loss of motive power and increase the risk of crash and fire. My vehicle falls outside that recall's build range and the manufacturer has declined coverage on that basis. Had the bearing seized while driving rather than being found during shop diagnosis, the engine could have lost power or stalled without warning. This vehicle carries family passengers on highways. No crash, fire, or injury occurred.

Filed Aug 4, 2026 · Engine · 123,000 miles · AZ

The contact owns a 2019 Honda Odyssey. The contact stated that while driving 30 MPH, there was an abnormal knocking sound coming from the engine. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the cylinder #6 rod bearing was damaged, and that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 123,000.