YearToAvoid

2015 Ram Promaster Engine Problems

NHTSA lists 22 engine complaints for the 2015 Ram Promaster, 37% of its 60 total complaints that year. No recall is tied directly to this engine complaint group, though owners frequently mention a related radiator fan recall dispute. Median mileage at failure is 46,292 miles.

Engine complaints
22
37% of 60
Crashes reported
0
Fires reported
0
Injuries reported
0
Median mileage
46,292 mi
Related recalls
0

Typical engine symptoms owners report

  • Sudden loss of power or stalling at highway speed, sometimes with warning lights and a message reading 'service required - transmission service'.
  • Radiator/cooling fan failures that trigger limp mode, burning smells, or overheating, with some owners denied coverage under a related recall.
  • Rocker arm wear leading to camshaft damage requiring replacement of rocker arms on all cylinders.
  • Transmission clunks paired with sudden engine power loss occurring across a range of speeds.
  • Engine revving unexpectedly after the gear shift lever is accidentally bumped into manual mode.
  • A radiator fan fault code (P0481) linked to a known defect pattern seen on other FCA vehicles.

When 2015 Ram Promaster engine complaints were filed

First complaint Oct 16, 2015, latest Apr 13, 2026.

2015 Ram Promaster engine complaints: complaints filed per month3Oct 2015Aug 2016Nov 2018Jul 2020Dec 2020Dec 2025
22 complaints filed with NHTSA from Oct 2015 to Apr 2026; peak Sep 2020 (3).

Engine recalls for the 2015 Ram Promaster

No safety recalls on record for this model year.

Engine complaints by Promaster model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 201418 (25%)
  2. 201522 (37%)
  3. 201615 (47%)
  4. 201724 (42%)
  5. 201812 (32%)
  6. 201918 (30%)
  7. 202010 (24%)
  8. 202114 (13%)
  9. 202216 (25%)
  10. 202325 (28%)
  11. 20243 (27%)
  12. 20253 (50%)

Frequently asked questions

How common are engine problems on the 2015 Ram Promaster?
NHTSA lists 22 engine complaints for the 2015 model year, making up 37% of all 60 complaints filed for that year.
Is there a recall for the 2015 Ram Promaster engine?
NHTSA shows no recall listed specifically under this engine complaint group, though multiple owners reference a separate radiator fan recall in their complaints and report coverage disputes with dealers.
At what mileage do engine problems usually appear?
The median mileage at failure among NHTSA complaints in this category is 46,292 miles.
What are the most reported engine symptoms?
Owners most often report sudden loss of power while driving, cooling fan failures leading to overheating or limp mode, and rocker arm wear damaging the camshaft.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.