AC Not Cold with Bad Smell and Won't Turn On
The AC system is not producing cold air, emits a foul odor, and the compressor does not engage. This typically indicates a refrigerant leak, a failed compressor, or an electrical issue preventing the AC from activating.
Diagnosis Details
Possible Causes
Refrigerant leak causing low pressure, preventing compressor clutch engagement and allowing mold/bacteria growth in the evaporator
Faulty AC compressor clutch or internal compressor failure
Blown AC fuse, relay failure, or wiring issue in the AC control circuit
Related OBD-II Codes
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What You Should Do
Check the AC compressor clutch for engagement when AC is turned on.
Inspect the AC fuse and relay.
Use a manifold gauge set to check refrigerant pressure.
If low, locate and repair the leak, then recharge the system.
If compressor is seized or clutch is faulty, replace the compressor.
For bad smell, clean or replace the cabin air filter and treat the evaporator with a disinfectant foam.
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.
