Nissan Sentra AC Not Working – How To Fix

By Max Anthony •  Updated: 09/28/22 •  3 min read

The Nissan Sentra is a great car, but it can be a little tricky to work on. You may have heard that the AC isn’t working properly, but this can be a problem with any of the AC systems on your Nissan.

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So, how do you fix it? Here are some simple steps to take when your AC isn’t working properly on your Nissan Sentra.

The signs that your Nissan Sentra AC is not working properly include no air coming from the vents, low or no air pressure, or an odor of a burning electrical connection in the cabin.

If you suspect that your Nissan Sentra AC is not working properly, first check to see if there is any unusual heat coming from the vents. If you do not notice any heat coming from the vents, it could be that your AC fan motor is not working properly.

If you find no heat coming from the vents and you have checked all fuses and have turned on the air conditioning and lights to make sure they are functioning properly, then it could be that there is a blown fuse in your fuse box under the hood of your Sentra.

If there are no signs of blown fuses and your Sentra has just recently been serviced by an authorized Nissan dealer, it may be possible that a vacuum hose has come loose and is causing air leaks into the cabin of your vehicle.

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This would result in cold air being drawn into the vehicle as it tries to keep up with warm air blowing through all open vents in the car’s cabin.

Procedures

If your Nissan Sentra AC is not working, you will need to check the fuse box to see if there is a blown fuse or if it needs a new fuse. Here are some simple steps that you can take to check the fuse box in your Sentra:

Turn off the car and wait for at least five minutes. Once the car has cooled down, open the hood and locate the AC unit on the passenger side of the vehicle. Unplug it from its power source and then remove any screws that may be holding it in place.

Remove any protective plastic parts as well as any excess wiring, then use a flathead screwdriver to remove any covers that may be covering up wires or fuse boxes inside of them.

Check for any debris or dirt in the interior of each vent, then clean it out with a vacuum or by blowing it out with compressed air.

You may also want to use a small brush to get any particles out as well. Check for any burnt wires inside of each vent and if there are any, cut them off with a pair of scissors and discard them before putting everything back together again.

Check for damage to wiring inside of each vent as well, if there is any damage then repair it.

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Max Anthony

Max is a gizmo-savvy guy, who has a tendency to get pulled into the nitty gritty details of technology and cars. He attended UT Austin, where he studied Information Science. He’s married and has three kids, one dog and a GMC truck and a Porsche 911. With a large family, he still finds time to share tips and tricks on cars, trucks and more.

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