Musty Smell After Rain in 2020 Honda CR-V
A musty odor after rain typically indicates moisture accumulation in the cabin, often due to clogged AC drain tubes, wet cabin air filter, or water intrusion from door/window seals. This can lead to mold and mildew growth, affecting air quality and comfort.
Diagnosis Details
Possible Causes
Clogged AC evaporator drain tube causing water to pool in the HVAC system
Wet or contaminated cabin air filter due to moisture ingress
Leaking door or window seals allowing rainwater into the cabin
Related OBD-II Codes
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What You Should Do
Inspect and clean the AC evaporator drain tube (often located under the dashboard or near the firewall).
Replace the cabin air filter if damp or dirty.
Check door and window seals for leaks.
Use a dehumidifier or run the AC on high heat to dry out the system.
If mold is present, professionally clean the HVAC system.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
