Intermittent Weak A/C Airflow with Bad Odor
The A/C system in your 2020 Nissan Rogue is producing weak, intermittent airflow accompanied by a bad smell. This typically indicates a clogged or dirty cabin air filter, a failing blower motor resistor, or mold/mildew buildup in the evaporator case.
Diagnosis Details
Possible Causes
Clogged or dirty cabin air filter restricting airflow and trapping moisture/debris causing odor
Failing blower motor resistor causing intermittent fan speed operation
Mold or mildew growth on the evaporator coil due to condensate drainage issues
Debris or leaf buildup in the fresh air intake or blower motor housing
Related OBD-II Codes
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What You Should Do
Start by replacing the cabin air filter (located behind the glove box).
If the odor persists, use an A/C evaporator cleaner spray.
Check the blower motor resistor for intermittent operation by testing all fan speeds.
Inspect the cowl area for debris and ensure the condensate drain is clear.
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.
