Intermittent Weak A/C Airflow with Odor
The A/C system in your 2021 Tesla Model Y is producing weak airflow that comes and goes, along with a bad smell. This suggests a blockage or contamination in the evaporator or cabin air filter, possibly combined with a failing blower motor or control issue.
Diagnosis Details
Possible Causes
Clogged or dirty cabin air filter restricting airflow and causing odors
Evaporator coil contamination or mold growth causing smell and reduced airflow
Blower motor resistor or blower motor failure causing intermittent operation
HVAC blend door actuator malfunction affecting airflow direction and volume
Related OBD-II Codes
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What You Should Do
Replace the cabin air filter first.
If odor persists, have the evaporator coil cleaned and inspected for mold.
Check blower motor and resistor for intermittent failure.
Test blend door actuator operation.
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.
