HVAC cold air drivers' side and warm air passenger side

2017 NISSAN ROGUE
90,000 MILES
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CHARLES REESE
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My air conditioner blows cold air on the driver's side but warm air on the passenger's side. What would cause this?
Apr 12, 2022 at 6:30 PM
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SQM
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Hello,

This sounds like you have a faulty blend door actuator for the passenger side.
The blend door actuator controls the hot/cold flow of the air. A failed actuator can cause the air doors to get stuck in one position (in your case in heater mode).

https://www.2carpros.com/articles/replace-blend-door-motor

The blend door actuator is located on the HVAC box behind the dash.

I have attached diagrams below for your reference.

Please let me know of any questions.
Thank you.
Apr 12, 2022 at 11:27 PM