2021 Honda Pilot: misfire or rough idle

Filed Sep 13, 2026 · Engine · SC

Our pilot is experiencing similar issues found online with catastrophic engine failure due to a misfire caused by a knocking rod. Honda so far has not responded to our claim despite it being a known issue around the same time ours was manufactured.

Filed Aug 24, 2026 · Engine · CA

Was driving vehicle and all of a sudden engine light pops up with no driver codes and the left side of engine starts knocking. I pull into the closest shop. They test a vehicle misfire in cylinder 5 and propose vehicle gets towed to dealership to look at codes. I tow vehicle to dealership for them to tell me rod bearings, crankshaft are bad and need a new engine. Engine was 99k and well maintained with every service record included. I asked about Honda goodwill which they denied me due to vehicle not getting serviced at Honda for oil changes. The rod bearings were recalled on previous Honda models and there is currently an open investigation on 2021 models but no official recall.

Filed Feb 2, 2026 · Engine, Fuel system · MN

After driving the vehicle for a few hours during a very cold day, as we got off an exit ramp. We then turned onto the next road in our travels and the check engine light went off and blinked. The vehicle went into limp mode. Pulled the vehicle over, turn the car off and then back on and everything worked just fine. Had an oil change already scheduled for 2 days later. Brought the vehicle in for it oil change and we told the Honda Mechanic (dealership) what just happened. His response was: That is a common honda problem. "You did what we would have told you to do. Turn the car off and then back on. When the engine compartment gets really warm when driving for long periods of time with the cold weather, something tells it to misfire and throws a check engine code. We tell people to do what you did and turn the car off and then back on". Meanwhile we had to go out of town again the following weekend. As soon as we got near our destination the same thing happened again. This time in an intersection! Thankfully nobody was coming at the time of the limp mode to avoid a potential serious accident. I have put a lot of research into this and there are a lot of forums online that state this issue with no solution by Honda. I do not see how that is safe to have your car randomly throw a code and be forced to pull over immediately.

Filed Jan 5, 2026 · Engine · NH

Check Engine Light came on during normal highway driving with Cylinder 2 Misfire as the readout. The vehicle was brought to local Honda dealer for troubleshooting and maintenance. Dealer maintained vehicle on schedule with 96,000 miles on it. Initially, informed us that this was due to the air filter housing being improperly placed and low power from the battery. Resolved both and then informed us it was an issue with the connecting rod/crankshaft and the engine would need to be replaced. During most recent fluids service about 2 months prior, had raised concerns about an intermittent shifting/low RPM jump and was told it was just debris but no real issue.

Filed Jun 8, 2022 · Engine, Transmission · IL

I will be filing a issue with our 21 Honda Ridgeline too as the same problem has occurred in both vehicles with the same engine and transmission. This has happened a total of 3 different times. When I drive the Pilot for a long time (over 4 hours)on the expressway and then pull off on a ramp and turn left the vehicle will go into safe mode. The engine light will start flashing and you can not drive over 30 mph. The engine runs rough and idles hard. I have contacted Honda and the dealership I purchased it from. Honda has acknowledged this is a problem and has occurred multiples with many different vehicles. The dealership I work with has acknowledged the same thing as they have several vehicles that have been brought in with this problem. I have waited several months for Honda to come up with a solution, so far they have not. This is a safety concern because what would happen if this same situation came up when I'm pulling my trailer or on the expressway at higher speeds. This could cause an accident. This first started on my Pilot in December of 2021. It has happened several times since then. Every time there is no code the computer keeps, even though each time the engine light is flashing. What I have been told is the computer thinks the engine has backfired and goes into safe mode, but Honda doesn't know why it does this. If you turn the vehicle off and restart it, the problem goes away. When the dealership has run a diagnosis off the computer, there are no codes the computer throws. Even though the check engine light is flashing when this occurs.