AC Not Cold, Bad Smell, Won't Turn On
The air conditioning system is not turning on, fails to produce cold air, and emits a bad odor. This typically indicates an electrical or refrigerant issue, possibly combined with mold or debris in the system.
Diagnosis Details
Possible Causes
Blown fuse or faulty AC relay preventing compressor engagement
Refrigerant leak causing low pressure and compressor lockout
Mold or bacterial growth in the evaporator causing bad smell
Faulty AC compressor clutch or compressor failure
Failed blower motor resistor or blower motor
Related OBD-II Codes
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What You Should Do
Check the AC fuse and relay first.
If they are good, inspect for refrigerant leaks using a UV dye or pressure gauge.
If the system has pressure but still won't turn on, test the compressor clutch and blower motor.
For the bad smell, replace the cabin air filter and consider using an evaporator cleaner.
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.
