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Heater Fault Codes

Heating and Ventilation

Vehicle Information: Model: 964; Year: 1991; Body Type: Convertible; Engine (type, size, modifications): Std; Total Mileage: 82000;

First, I recently purchased the Durametric diagnostic tool, and it should be a great help. From this, I was able to find two fault codes for the HVAC system; 31: Left Mixing Flap Motor, and 45: Inside Sensor Motor. I am experiencing a problem with no heat coming from the drivers side vents, and I assume this is the issue. Is this something that is easy to troubleshoot? If so, where should I start?

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