2020 Honda CR-V Hybrid: misfire or rough idle

Filed Sep 1, 2026 · Engine · WA

One four occasions our 2020 Honda CRV Hybrid has started after sitting overnight in the greater Seattle area in the spring and summer with a rough idle. Within two miles of leaving our home at speeds of no more than 35 miles per hour, the check engine light began to flash. All four times, the rough idle and check engine light were accompanied by degraded speed responsiveness and the error cleared with turning the car on and off again. We have taken the vehicle to a mechanic twice and each time they couldn’t find any stored codes or replicate the issue. The issue continues to occur and seems to be getting worse. I’m concerned this will happen at high speeds and result in a total loss of power which will be unsafe.

Filed Aug 25, 2026 · Engine · 103,000 miles · NC

The contact owns a 2020 Honda CR-V. The contact stated that while attempting to accelerate, the vehicle lost automotive power. The contact stated that several unknown warning lights were illuminated. The vehicle was towed to a local dealer to be diagnosed, and the contact was informed that there was a misfire in cylinders #4 and #6. The fuel injectors were replaced. The contact stated that while driving 55 MPH, the vehicle lost automotive power and failed to exceed 35 MPH, with the check engine warning light flashing. The contact stated that while accelerating from a stop, the vehicle failed to exceed 10 MPH. The vehicle was taken to an independent mechanic; however, the mechanic failed to retrieve a fault code and found no cause for the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 103,000.

Filed Aug 25, 2026 · Fuel system · PA

2/19/26 My car lost power while accelerating up a hill at about 60mph and the car had been operating for an hour and a half or so. The car was shaking, running on reduced power and the check engine light was flashing so we had to pull over to safety on a busy road. The car was towed to the local Honda dealer. The dealer said the code was a misfire on cylinder #4 but once they restarted the car the error went away. They did perform multiple tests including a compression test on all four cylinders and a leak test, and the car passed them all. They were unable to reproduce the problem. They did swap the #4 coil so that if it happened again, we would have more diagnostic information. They recommended no further action at that time. On 5/11/26 we had the same experience, also while accelerating uphill, after about 30 minutes of driving, this time on the interstate which was very scary; reduced power, car shaking and check engine light flashing. We pulled over, turned off the engine, and sure enough, when we restarted the car, it started normally. When we went to the repair shop a few days later there were no engine codes showing. On 6/12/26 the same thing happened again. While going uphill, on the interstate, after a couple of hours of driving. This time, as soon as we got home, we used an engine code reader and saw code P0304 – Cylinder 4 misfire. On 8/13/26 Lehigh Valley Honda reproduced the problem on the interstate, going uphill and do not have a clear fix. They want me to spend $587 on a Valve Clearance Inspection and Adjustment that I think won't yield any result.

Filed Oct 9, 2024 · Engine, Transmission · IL

Misfires due to Faulty OEM Injectors. Also headgaskets tend to blow easily bad design. Honda needs to address this issue fast

Filed Aug 29, 2024 · Engine, Fuel system · 59,018 miles · PA

The contact owns a 2020 Honda CR-V. The contact stated while driving 65 MPH, the vehicle lost motive power. The check engine warning light was illuminated. The contact was able to pull to the side of the road. The contact stated upon attempting to continue driving, the vehicle failed to respond as needed while depressing the accelerator pedal. The vehicle was towed to the dealer, where the contact was informed that a cylinder had misfired; however, the dealer informed the contact that the cause of the failure could not be determined. The vehicle was not repaired. The contact stated that the failure recurred while driving. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the federal safety agency Campaign Number: 23V858000 (Fuel System, Gasoline); because of the plant where the vehicle was manufactured. The failure mileage was approximately 59,018.