2021 Honda Ridgeline engine problems
26 owner complaints filed with NHTSA name the engine on the 2021 Honda Ridgeline — 27% of all complaints for this model year.
What owners report
“Auto Idle Stop failed as I was sitting at a red light. As I came to a stop at the light, the truck entered the Auto Idle Stop. When the light turned green and it was time to accelerate, I released my foot off of the brake and the engine stopped. It cut out right there. Warning lights came on and I…”
filed Aug 3, 2026
“The check engine light came on Dec 26 which I took to have checked and was told that it should go to the shop. The code was not being stored. I took it to the Honda dealership and they did a complete check and said the engine had gone back. The connecting rods and barrings cause the engine to fail…”
filed Feb 11, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the…
A23-009 · Service Bulletin/Repair Instructions · issued Jul 7, 2025Service Bulletin - MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather…
A24-085 · Service Bulletin/Repair Instructions · issued Jul 20, 2024Service Bulletin - The MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather…
A24-085 · Service Bulletin/Repair Instructions · issued Jun 19, 2024
Engine problems in other Ridgeline years
| Year | Reports | Share |
|---|---|---|
| 2025 Ridgeline | 16 | 22% |
| 2024 Ridgeline | 5 | 10% |
| 2023 Ridgeline | 17 | 14% |
| 2022 Ridgeline | 24 | 21% |
| 2020 Ridgeline | 36 | 22% |
| 2019 Ridgeline | 36 | 16% |
| 2018 Ridgeline | 21 | 13% |
| 2017 Ridgeline | 81 | 24% |
| 2014 Ridgeline | 1 | 3% |
| 2013 Ridgeline | 2 | 4% |
| 2012 Ridgeline | 1 | 4% |
| 2010 Ridgeline | 2 | 5% |
Other reported problem areas on the 2021 Honda Ridgeline
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.