Skip the auto shop - Our mechanics make house calls

Q: AC compressor not coming on

asked by on

The air conditioner compressor is not coming on.

Your compressor is most likely not coming on due to your air conditioning system being low on refrigerant. When this happens the computer does not let the compressor activate to prevent damage. The refrigerant slowly leaks out over time and needs to be recharged every few years normally. It is also possible that there may be a leak that needs to be repaired as well. I would recommend having an expert mechanic, such as one from YourMechanic, inspect why your AC system is not working properly.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Would a broken AC compressor cause the serpentine belt to break? 2009 Saturn Outlook

Hi there, yes, the air conditioning compressor is capable of breaking the serpentine belt a couple of ways. If the AC compressors seizes while operating, the shock load can snap the serpentine belt. If the AC clutch bearing seizes while...

Q: tranmision fluid fair condition change 2 years ago. Should I chage it or not?

If the fluid is light red and full, I would leave it alone. You may cause more problems changing the fluid now. The bump into overdrive is the torque converter and transmission wear and should be left alone unless it...

Q: Transmission slips.

If you are reusing your old fluid you are defeating the purpose of changing the filter. I would only say this is ok if the ATF (automatic transmission fluid) was already spotlessly clean. If not, I recommend having a ATF...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.