AC Not Cold, Bad Smell, Weak Airflow
The AC system is not producing cold air, emits a foul smell, and has weak airflow. This combination suggests a clogged or dirty cabin air filter, a failing blower motor, or a contaminated evaporator core. The issue is constant, indicating a persistent problem rather than an intermittent one.
Diagnosis Details
Possible Causes
Clogged cabin air filter restricting airflow and causing musty odors
Blower motor resistor failure or blower motor malfunction reducing fan speed
Evaporator core contamination or mold growth causing bad smell and reduced cooling
Low refrigerant level due to leak, reducing cooling capacity
Related OBD-II Codes
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What You Should Do
First, inspect and replace the cabin air filter if dirty.
Check blower motor operation at all speeds; if weak, test the blower motor resistor and motor.
If smell persists, consider an evaporator cleaning or A/C system service.
Have a professional check refrigerant pressure if cooling is insufficient.
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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.
