Ram brand mark

2014–2018 Ram 2500 · common problems & known faults

The 4th-gen Ram 2500 is a heavy-duty workhorse; on Cummins diesels, emissions hardware and 'death wobble' are the checks.

Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026

Quick answer

The most commonly reported faults on the 2014–2018 Ram 2500 are Front-axle 'death wobble' at speed after a bump, 6.7 Cummins EGR / DPF clogging and DEF system faults and Water pump and thermostat wear. 2 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.

Reliability snapshot

Based on the documented faults on this page for the Ram 2500.

6.7/ 10
Solid
Critical
0
High
2
Medium
2
Low
0

Guidance only · reflects reported patterns, not a specific car's condition.

Known faults to check

SteeringHigh

Front-axle 'death wobble' at speed after a bump.

Typically appears
Any
What to inspect
Test at highway speed over rough roads; check steering damper and linkage.
EmissionsHigh

6.7 Cummins EGR / DPF clogging and DEF system faults.

Typically appears
80,000+ miles
What to inspect
Scan for emissions codes and check regen / DEF history.
CoolingMedium

Water pump and thermostat wear.

Typically appears
100,000+ miles
What to inspect
Check for coolant leaks and overheating history.
SuspensionMedium

Track bar and ball-joint wear.

Typically appears
90,000+ miles
What to inspect
Check for front-end play and clunks.

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Frequently asked questions

Is the Ram 2500 reliable?

The Cummins is durable, but emissions hardware and death wobble need checking.

What is death wobble on the Ram?

A violent steering shake from front-suspension resonance; inspect the steering damper and track bar.

Are diesel emissions repairs costly?

EGR/DPF/DEF repairs can be expensive; verify maintenance and any delete-free history.

Sources & further reading

Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.