AC Not Cold with Bad Smell
The air conditioning system is not producing cold air and emits a foul odor, indicating a potential refrigerant leak, compressor issue, or microbial growth in the evaporator.
Diagnosis Details
Possible Causes
Low refrigerant charge due to a leak in the AC system (e.g., at seals, hoses, or condenser).
Faulty AC compressor or clutch not engaging, preventing refrigerant circulation.
Mold or bacteria buildup in the evaporator core, causing the bad smell and reduced cooling efficiency.
Blocked or dirty cabin air filter restricting airflow and causing odors.
Related OBD-II Codes
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What You Should Do
Check refrigerant pressure with a manifold gauge set; inspect for visible leaks.
Test compressor clutch operation.
Replace cabin air filter if dirty.
Use an AC evaporator cleaner to eliminate odors.
If refrigerant is low, repair leaks and recharge system.
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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.
