Nissan Rogue 2020 AC Not Cold and 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 core or cabin air filter.
Diagnosis Details
Possible Causes
Clogged or dirty cabin air filter causing reduced airflow and musty smell
Mold or mildew buildup on the evaporator core due to moisture accumulation
Low refrigerant charge (leak) causing insufficient cooling
Faulty AC compressor or clutch not engaging
Related OBD-II Codes
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What You Should Do
First, replace the cabin air filter and use an AC evaporator cleaner to eliminate the musty smell.
Then check refrigerant pressure with a gauge set; if low, inspect for leaks and recharge.
If compressor doesn't engage, test the clutch relay and compressor coil.
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.
