AC Not Cold with Musty Smell
The AC system is not producing cold air and emits a musty odor when turned on. This typically indicates a refrigerant issue combined with microbial growth in the evaporator case.
Diagnosis Details
Possible Causes
Low refrigerant charge due to a slow leak, reducing cooling capacity and allowing moisture to enter the system.
Clogged or dirty cabin air filter restricting airflow and trapping moisture, leading to mold/mildew growth.
Faulty AC compressor or expansion valve not allowing proper refrigerant circulation.
Related OBD-II Codes
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What You Should Do
Inspect and replace cabin air filter if dirty.
Use an AC cleaner/evaporator foam to kill mold.
Have a professional check refrigerant pressure, repair any leaks, and recharge the system.
If the smell persists, the evaporator may need cleaning or replacement.
Related Repairs
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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.
