2018 RAM 1500 fuel system, diesel problems
51 owner complaints filed with NHTSA name the fuel system, diesel on the 2018 RAM 1500 — 8% of all complaints for this model year.
What owners report
“The contact owns a 2018 Ram 1500. While the contact's mother was driving at highway speeds, the vehicle stalled. There was no warning light illuminated. The contact used a code reader and retrieved a code related to the high-pressure fuel pump (HPFP) that the HPFP was operating at half the required…”
filed Jan 6, 2026
“The contact owns a 2018 Ram 1500. The contact stated that while driving approximately 20 MPH and making a right turn, the vehicle started vibrating and almost stalled. The contact stated that the check engine warning light and a warning light for the throttle body was illuminated. The contact…”
filed Dec 22, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- A high pressure fuel pump (HPFP) failure may introduce internal debris into the fuel…Campaign 22V406000 · Jun 9, 2022
Fuel System, Diesel problems in other 1500 years
| Year | Reports | Share |
|---|---|---|
| 2023 1500 | 2 | 1% |
| 2022 1500 | 18 | 3% |
| 2021 1500 | 3 | 0% |
| 2020 1500 | 2 | 0% |
| 2019 1500 | 17 | 1% |
| 2017 1500 | 31 | 4% |
| 2016 1500 | 80 | 5% |
| 2015 1500 | 66 | 5% |
| 2014 1500 | 44 | 2% |
Other reported problem areas on the 2018 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.