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 common cause for AC not working is...

The most common cause for AC not working is a leak. Once the refrigerant pressure gets low enough, the system will not work. The vehicle has pressure sensors that keep the system from starting so that you do not damage the compressor. There are other things like a bad compressor clutch coil, burnt compressor clutch, or a bad relay that can also keep the ac from working. A technician, such as one from YourMechanic, should be able to help you diagnose your air conditioning issue.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Tire leak

Hi! The area that a tire can lose air is very limited. The air loss will come from either a damaged rim, leaking valve stems or tire puncture. Most punctures can be repaired but not all. I suggest that a...

Q: 2012 Jetta Cruise control not engaging.

You may still be right about the brake light switch. The brake light switch two redundant circuits for safety. One of the circuits can fail and the brake lights will still work but the cruise control will be disabled. It...

Q: will a water pump fail without the temperature light showing?

When a water pump fails, it usually fails by seizing up. It is possible for a water pump to seize up without having any warning lights illuminated. Many times the water pump will make a noise because the bully is...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...