Odor from HVAC vents on Dodge Ram 1500

Some vehicles may develop a musty odor coming from the HVAC system, Dodge has issued a cleaner/disinfectant and a coating for the evaporator designed to inhibit bacterial growth.

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Average mileage: 92,659 (16,500–253,000)
11 model years affected: 1994, 1997, 2002, 2003, more2004, 2005, 2006, 2007, 2008, 2009, 2010
40 people reported this problem
16 people shared problem details
2010 Dodge Ram 150072,000
musty smell after the truck has run and then shut off and restarted. the smell last until the heat gets hot.
1 person likes thisFlag inappropiate
2004 Dodge Ram 150076,000
Using the A/C with fresh air produces a musty smell of the air entering the cabin from the HVAC system. I looked in the manual if there was an air filter for the cabin to change with no avail. After returning from an overseas military assignment where the truck was in storage for 3 years, took it for service and asked the dealership to troubleshoot and solve the problem. There was no filter to change/replace so the service department flushed the fresh air intake (at the base of the windshield with a pressure washer/cleaner) and also ensured there was no clog for the A/C drain. Now the fresh air and A/C does not have the musty smell.
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2005 Dodge Ram 1500130,000
the a/c smells a little musty
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2007 Dodge Ram 150066,000
TURN ON THE FAN AND YOU CAN SMELL MILDEW-NOT FIXED YET
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2004 Dodge Ram 150055,000
No repair. My local dealer has no idea how to fix it.
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2006 Dodge Ram 150035,000
Had musty odor;delt with it thinking pet or other dirt issue. Then found leak in roof seal going down rear window; fixed leak after 3 trys and carpet replaced; But, never have gotten rid of musty odor
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2004 Dodge Ram 150056,000
How do I clear musty smell from air vent?
2010 Dodge Ram 150092,000
Sudden issue with strong mold mildew smell blowing from A/C vents on every start up. Smell is string on start up and then lessens some as you drive.
2008 Dodge Ram 1500128,000
Strong chemical odor after weeks of rain. Thinking of putting a bleach mixture mist down the outside intake to get it in the drain pan and coils.
2002 Dodge Ram 150096,000
When the fan for the HVAC blower is turned on, a very musty smell is exhausted through the vents.
2009 Dodge Ram 150050,000
There is no cab air filter and the air is restricted and musty.
Musty order coming out of vent
2010 Dodge Ram 150074,000
musty dirty smell coming from ac vents
2008 Dodge Ram 150089,000
I've been having the musty odor for awhile now and was not aware I didn't have a filter.
2005 Dodge Ram 150088,000
Musty, stale smell. Ongoing, not been able to fix yet.
2007 Dodge Ram 150046,675
Just a musty/melted plastic kind of smell from the vents. Always wondered what that was. Havent fixed it yet,planning on it now.
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