2020 Honda Accord · symptom sheet
Check engine light or misfire
- 34owner reports
- 85,741median miles
- 0involved a crash
Newest report Sep 22, 2026 · checked Oct 2, 2026
148 of the 362 complaints on this car are about the engine. 34 of those describe misfire.
Tick what matches of 34 reports
Misfire on other Accord years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2014, 2015, 2016, 2021, 2022, 2023, 2024, 2025, 2026.
What this problem usually is
These reports start with the check engine light. Many describe the engine running rough or shaking at idle, a P0300-series code, or a catalytic converter code. A worrying number say the light was flashing. Owners often list ignition coils or spark plugs already replaced, and the light coming back afterward.
What got replaced
Owners who name the part that was replaced mention the spark plugs (7 reports), the injectors (7 reports) and the ignition coils (5 reports).
Recalls and investigations
3 recalls on the engine cover the 2020 model year. A recall on the same system isn't always the same failure, so read the defect text.
The fuel pump inside the fuel tank may fail.
The low-pressure fuel pump inside the fuel tank may fail.
A software error may cause intermittent or continuous disruptions in communication between the Body Control Module (BCM) and other components.
All 5 recalls on the 2020 Honda Accord, with the owner complaints on each recalled system
NHTSA investigations into the engine on the Accord
Ignition shift interlock. Closed oct 14, 2010, led to recall 10V-364.
Ignition park-shift interlock. Closed jan 5, 2009, led to recall 10V-364.
Ignition-park interlock. Closed feb 2, 2005, led to recall 05V-025.
Ignition-park interlock. Closed jan 13, 2005.
Ignition-park interlock. Closed dec 17, 2003, led to recall 03V-423.
Honda high engine speed. Closed may 4, 1987.
None of these investigations covers the 2020 model year.
When it happens
The middle half of failures fell between 13,762 and 111,309 miles, from the 14 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 14 service bulletins or notices for the 2020 Honda Accord that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire and/or DTCs P0300 thru P0304 stored.
American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 Accords, Civic Sis, and CR-Vs with a customer complaint of the Malfunction Indicator Light (MIL) on with DTCs P030X (Cylinder Misfire Detected) and/or P0172 (System Too Rich [Bank 1]) ...
American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2022 Accords, CR-Vs, Odysseys, Passports, Pilots, Ridgelines, 2020 Fits, 2020-2021 Civic Hatchbacks, 2020-2023 Civic Sedans/Coups with a customer complaint of the Check Engine Light (CEL) on & ...
Under certain circumstances, the vehicle may experience driveability concerns. This may result in the following DTCâs to set: ⢠P0300 (Random Misfire Detected), ⢠P0301 (No. 1 Cylinder Misfire Detected), ⢠P0302 (No. 2 Cylinder Misfire Detected), ⢠...
10 more on the 2020 Honda Accord page.
What owners wrote
“2018 - 2022 models of the Honda Accord Sport are known to have a issue with the Head Gasket overheating and cracking causing cylinder miss fires and engine issue. Honda has refused to acknowledge the issue as a recall and my car recently suffered the same issue.”
Filed Jun 6, 2026
“All lights on dash are on. Problem with running hot, oil is milky looking misfires, vibration is terrible. Cuts off and will not go over 5 mph sometimes.”
Filed May 6, 2026
“Car is giving a P0301 error. Replaced coils and spark plugs still giving error. The problem is fuel inejectors. Gives car a rough idle at start up.”
Filed Jul 24, 2025
“Multiple warning lights on the dashboard come on and stay on including but not limited to check engine light, abs, break lights ect⦔
Filed May 22, 2025
Should you keep driving it?
This page can't tell you that. 0 of 34 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Which lights mean pull over now? Warning lights by color and urgency
Other problems on this car
- Brakes grind, pulse or wear early 57 reports
- Brakes on its own (automatic emergency braking) 53 reports
- Airbag warning light or recall 35 reports
- Multiple warning lights come on at once 33 reports
- Forward collision warning goes off or the camera drops out 32 reports
- Engine stalls or loses power while driving 31 reports
- Engine overheats or leaks coolant 28 reports