AC Not Cold with Musty Smell
The AC system is blowing warm air and emitting a musty odor, indicating a likely issue with the evaporator core or cabin air filter. The smell suggests mold or mildew buildup, while the lack of cold air points to a refrigerant leak or compressor problem.
Diagnosis Details
Possible Causes
Clogged or dirty cabin air filter causing musty smell and reduced airflow
Mold or mildew on the evaporator core due to moisture buildup
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.
Check compressor operation and refrigerant pressure.
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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.
