NHTSA Complaint #11510869 — 2019 HONDA ACCORD

On 01-31-2023 at 5pm my Accord (2019, 27k miles) experienced a limp mode condition on the Highway forcing me to pull over onto the shoulder and restart the car. I was traveling for 4+ hours in rain / misting rain on the way to North Carolina for a business trip. I went to pass a slow moving vehicle, and the car’s check engine light began to flash 2 seconds after I hit the accelerator. The car’s check engine light began to flash and the car would not exceed 40mph, indicating it had entered a limp mode condition. This forced me to pull over onto the shoulder. After a restart, the car performed as normal with no CEL. I took the car to Advance Auto parts to see if the ECU captured any codes - 3 “pending” codes were stored - P0300 random misfire, P0301 Cylinder 1 misfire, P0304 Cylinder 4 misfire. I took the car to Shockley Honda in Frederick MD on 02/06/2023 and the pending codes had cleared / a diagnosis of possible traction control engagement was given - I am 100% certain this was the check engine light / limp mode, and that this is an incorrect diagnosis. Honda has a TSB for this exact issue: https://www.driveaccord.net/attachments/a21-052-pdf.531063/ Additionally I have dash camera footage to collaborate my account of events, including the event occurring; pulling over on the side of the road; and the trip to advance auto, where you can hear me reading the codes Car entering limp mode on highway: https://youtu.be/1E9RKIH-MnM Drive to advance auto: https://youtu.be/esqrADVXfsA Reading codes: https://youtu.be/5fN10jBiChw Multiple other owners have experienced similar issues in similar weather conditions in their 2.0T Accords https://www.driveaccord.net/threads/check-engine-light-cel-in-the-rain-went-into-limp-mode.502130/page-11 This incident lead to unsafe vehicle operation through a loss of power scenario in adverse weather. Honda customer service and the dealer have so far failed to address the issue in the TSB per my insistence.