I have a 2018 Honda Accord ex with dual zone climate. Driver side vents blow normal air while my passenger side blows cold air. I looked up possible problems and all I could find is that it could be a bad blend door actuator.
Is it still under any warranty?
No it is not.
You need to run diagnostics with a professional-grade scan tool that can do bidirectional testing of the HVAC components.
Most of the time it just needs refrigerant.
I had a similar issue on my ‘14 Ford and got really carried away diagnosing blend door position sensors and temperature sensors (and found a few faulty items) - only to end up needing a refill.
Honda had extended AC warranties for many cars on many different component - but I’m unsure if there’s a warranty on the Accord.
