A/C Not Cold and Bad Smell
The air conditioning starts cold but quickly becomes warm, accompanied by a bad smell. This suggests a refrigerant leak or a failing component, possibly with mold or debris in the system.
Diagnosis Details
Possible Causes
Low refrigerant charge due to a leak (e.g., at evaporator, condenser, or hoses). The smell may come from mold on the evaporator core.
Faulty expansion valve or orifice tube causing intermittent refrigerant flow.
Compressor clutch or compressor failure (e.g., internal leak or electrical issue).
Related OBD-II Codes
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What You Should Do
Have the A/C system inspected for leaks using a UV dye or electronic leak detector.
Check refrigerant pressure, compressor operation, and evaporator drain for blockage.
Clean or replace cabin air filter and treat evaporator for mold if smell persists.
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.
