Got an engine warning light while traveling. Our RV only has 67,000 miles on it. Cummins local dealer reports it is a Selective Catalyst Reduction (SCR) unit problem and unit needs a $10,000 replacement. This SCR is supposed to last 500,000 miles. Cummins refuses to cover the cost for this SCR repair even though Cummins issued a 2022-2024 voluntary recall acknowledging the problem_Cummins CR 2113. We never received a recall notice. Failure to replace will progressively lead to ghost error codes and eventually having the unit go into limp mode before stopping unexpectedly. Many people with this problem report a similar refusal by Cummins and some have been left on the side of the road when the unit fails because it is a difficult problem to diagnose.
The worst 2015 Dynamax DX3 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Fuel system1
Problems by type
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- Fuel system1
Recalls
No recalls on record for this model year.
What 2015 Dynamax DX3 owners say
Most recent owner complaints, unedited.
Compare the 2015 Dynamax DX3
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Questions about the 2015 Dynamax DX3
Is the 2015 Dynamax DX3 reliable?
Owners have filed 1 complaint about the 2015 Dynamax DX3, close to a typical DX3 model year.
What is the most common problem with the 2015 Dynamax DX3?
Fuel and propulsion system, with 1 complaint.
How many recalls does the 2015 Dynamax DX3 have?
No recalls on record.
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