AC Not Cold and Bad Smell
The AC blows cold on the highway but warms up in traffic, accompanied by a bad smell. This indicates a potential issue with the condenser fan, refrigerant level, or a clogged evaporator/air filter causing poor airflow and odor.
Diagnosis Details
Possible Causes
Condenser fan not working properly, causing insufficient cooling at low speeds or idle.
Low refrigerant charge due to a leak, reducing cooling efficiency.
Clogged cabin air filter or evaporator causing bad smell and reduced airflow.
Faulty AC compressor clutch or expansion valve.
Related OBD-II Codes
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What You Should Do
Check cabin air filter and replace if dirty.
Inspect condenser fan operation at idle.
Have a technician check refrigerant pressure and look for leaks.
Clean evaporator if mold/mildew 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.
