AC Not Cold and Smells Bad
The AC starts cold but then becomes warm, accompanied by a bad smell. This suggests a refrigerant leak, a failing compressor, or a clogged evaporator causing moisture and mold growth.
Diagnosis Details
Possible Causes
Low refrigerant due to a leak (e.g., at the compressor, condenser, or hoses). The AC works initially but loses cooling as refrigerant escapes.
Faulty AC compressor clutch or internal failure, causing intermittent cooling.
Clogged or dirty evaporator core with mold/bacteria growth, causing bad smell and reduced cooling efficiency.
Expansion valve or orifice tube malfunction, leading to improper refrigerant flow.
Related OBD-II Codes
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What You Should Do
Inspect refrigerant level and check for leaks with a UV dye or electronic leak detector.
Clean or replace cabin air filter.
If smell persists, have the evaporator cleaned or replaced.
Test compressor clutch operation and pressure readings.
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.
