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Driver's Side Heat Not Blending Properly - Possible Temperature Sensor Failure?

s550_kenny

Member
Joined
May 9, 2024
Threads
4
Messages
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Location
Florida
Vehicle(s)
2021 Mustang GT PP
Hey guys. I've been having a problem with my Driver's side blend door actuator not blending the heat properly on my '21 GT.

I noticed that any time the temperature is set to anything other than MAX heat, it keeps the blend door fully open, meaning full A/C and no heat. Meanwhile, the passenger side blends properly. Only when I reach MAX heat, it fully closes the blend door to only allow the heater core to pass through and the heat works then.

Using Forscan, I confirmed the blend door readings and noticed a couple of temperature sensors, with one looking like it's bad. the number is sporadically changing between 33 or so Deg C and 92.

I have Left and Right Panel Discharge Air Temperature and Left and Right Floor Discharge Air Temperature, for a total of 4 sensors. I noticed my Left panel discharge air temperature is showing a wacky number of 92deg C while all the other readings look fine.

My question is does anyone know what temperature sensor the Left Panel Discharge Air Temperature is and where I can find it? I took apart the interior sensor located above my right knee of driver's side and unplugged it while looking at the Forscan values but it only changed the interior temp sensor and humidity, not the left discharge.
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