On Board Diagnosis (OBD) Monitor Readiness Information
full bulletin at NHTSA ↗2015 RAM 5500 engine problems
severe 4 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
4
Recalls
0
Avg fix
$3,100
1fire
When does it fail?
Of the 4 engine complaints filed for the 2015 RAM 5500, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
6.7L New Oil Usage Information Incorrect oil used. This bulletin provides information regarding the correct oil grade to use on the 6.7L Cummins used in the 2023 to 2013 HD Trucks. The following information is intended to eliminate confusion.
full bulletin at NHTSA ↗Water Quality When Mixed With Engine Coolant
full bulletin at NHTSA ↗wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
full bulletin at NHTSA ↗COOLER - EGR
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 4 most recent
Intake air grid heater nut came off and blew the #6 piston and engine needs to be replaced.
Vehicle was taken to the dealership due to an issue where white smoke would appear when the engine is under load. Dealer was unable to repair the issue due to scheduling conflicts. Owner attempted to drive the vehicle to another location for diagnostics. Vehicle caught on fire on the way to another dealer location.
Tl* the contact owns a 2015 Ram 5500. Upon inspection, the contact noticed coolant leaking from the vehicle. The vehicle was taken to fields Chrysler Jeep Dodge-sanford (750 towne center blvd, sanford, fl), but a leak could not be found. Afterwards, the low coolant indicator illuminated. The contact checked the engine compartment and noticed that coolant spewed out onto the undercarriage and…
Vehicle is 2015 and has 44.4k miles on it. Had it in for a routine oil change and the mechanic showed me that the oil pan is in extremely poor condition with multiple rot spots all over and could fail at anytime. Mopar extended warranty covers oil pans, but they dont cover rust. An oil pan is a static part, the only way it could fail is from rust or a catastrophic engine failure where a…
Had engine trouble with your 2015 RAM 5500?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2015 RAM 5500?
It's a meaningful issue. 4 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Based on the 4 complaints filed, engine issues most often appear around 64,500 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2015/RAM/5500.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.