2020 RAM 1500 electrical system problems
158 owner complaints filed with NHTSA name the electrical system on the 2020 RAM 1500 — 26% of all complaints for this model year.
What owners report
“MGU Failed, 48v code P0DAF had early signs of premature failure. when on the highway, vehicle shut off completely, no power what so ever. Couldn't steer correctly and vehicle was going highway speeds (approximately 70mph) dealer has confirmed the issue being there MGU gone bad, but I have records…”
filed Aug 5, 2026
“The tail lights keep going out on both sides. The tail light harness does not fit the female adapter properly. You have to hold it pushed in to get the light to come on but when you let go it turns back off. I have already replaced the sockets with Mopar OEM parts and am still having the problem…”
filed Jul 17, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
SWITCH – HEADLAMP
113070 · Service Bulletin/Repair Instructions · issued Jun 29, 2026
Electrical System problems in other 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 1500 | 33 | 49% |
| 2025 1500 | 153 | 50% |
| 2024 1500 | 27 | 40% |
| 2023 1500 | 62 | 33% |
| 2022 1500 | 181 | 31% |
| 2021 1500 | 192 | 29% |
| 2019 1500 | 371 | 25% |
| 2018 1500 | 157 | 24% |
| 2017 1500 | 105 | 12% |
| 2016 1500 | 187 | 12% |
| 2015 1500 | 154 | 11% |
| 2014 1500 | 242 | 14% |
Other reported problem areas on the 2020 RAM 1500
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.