Skip the auto shop - Our mechanics make house calls

Q: AC not working

asked by on

The air conditioner in my car is not working.

A: The most often cause of the AC not working ...

The most often cause of the AC not working on a car is low refrigerant. The system is a sealed system, meaning that if the system is low it's because you have a leak. Leaks can come from a simple piece like an O-ring or a complex one like an evaporator core. Other things like a failed compressor, or a bad compressor clutch & coil are common as well. Checking the system pressure and recharging it if it is low will be necessary for a proper diagnosis of your AC system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How do I replace the climate control air filter?

The climate control air filter will need to be replaced periodically. Replacing the filter is a quick and easy task: 1. Open the glove box. 2. Rotate the stoppers on either side counterclockwise, until they can be removed. 3. Remove...

Q: What does the temperature gauge show?

The temperature gauge is located on the instrument panel, and tells you the current temperature of the engine coolant. If the gauge shows that the temperature of the coolant is hot, you should pull over your vehicle and let it...

Q: Possible faulty sensor

Hello. Removing the wiring without knowing what you are doing is not a good thing. If the wiring is all apart it will need to be reinstalled first. I would typically reinstall the wiring and scan the computer for codes....

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.