Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** thank you for your question.
How many miles do you have on your Frontier?
This is most likely caused by a Blower Motor Amp failure. When this fails, the blower motor will either not work at all, or work and can't be turned off. Since you have only 15k miles on your truck, this would be covered under warranty.
It is not likely a fuse. But you have two blower motor fuses that you are welcome to check. But I would suspect the blower motor amp as your issue.
Do you have any more questions on this?