AC Not Cold with Musty Smell
The AC system is not producing cold air and emits a musty odor when running. This typically indicates a refrigerant issue combined with microbial growth in the evaporator core.
Diagnosis Details
Possible Causes
Low refrigerant charge due to a leak, reducing cooling performance and allowing moisture to accumulate.
Clogged or dirty cabin air filter restricting airflow and trapping moisture, leading to mold/mildew growth.
Faulty AC compressor or expansion valve causing insufficient cooling and condensation buildup.
Related OBD-II Codes
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What You Should Do
Inspect and replace cabin air filter.
Check refrigerant pressure and recharge if low.
Clean evaporator coil with a foaming cleaner or use an AC disinfectant spray.
If smell persists, have a professional inspect for leaks and perform an AC system service.
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.
