AC Not Cold with Bad Smell
The air conditioning system is not producing cold air and emits a foul odor, likely due to a refrigerant leak, a failing compressor, or microbial growth in the evaporator.
Diagnosis Details
Possible Causes
Low refrigerant level due to a leak (e.g., from seals, hoses, or condenser)
Faulty AC compressor or clutch not engaging
Mold or bacteria buildup in the evaporator core causing bad smell
Clogged or dirty cabin air filter restricting airflow
Related OBD-II Codes
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What You Should Do
Check refrigerant pressure with a manifold gauge; inspect for visible leaks.
Replace cabin air filter if dirty.
Use an AC cleaner spray for evaporator odor.
If compressor is not engaging, test clutch and relay.
Recharge system if low, but repair leaks first.
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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.
