AC Not Cold with Musty Smell
The musty smell and lack of cold air from the AC indicate a likely issue with the evaporator core or cabin air filter, possibly combined with a refrigerant leak or compressor problem.
Diagnosis Details
Possible Causes
Clogged or dirty cabin air filter restricting airflow and causing musty odor
Mold or mildew buildup on the evaporator core due to moisture
Low refrigerant level from a leak, reducing cooling performance
Faulty AC compressor or clutch not engaging
Related OBD-II Codes
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What You Should Do
Replace the cabin air filter first.
If smell persists, have the evaporator coil cleaned and the AC system inspected for refrigerant leaks and compressor operation.
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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.
