Skip the auto shop - Our mechanics make house calls

Q: Air conditioning not running after disconnecting battery

asked by on

After I turned off engine, I could hear the air conditioning fan or blower still running. My son disconnected the battery and it stopped. He put it back, but the air conditioning is no longer running.

A: The AC in your car is controlled by its own...

The AC in your car is controlled by its own computer. There are 50 wires going to it. For a proper diagnostic a scan tool would be needed to check for codes, in this module, and all the others. It sounds like the computer is malfunctioning. A qualified mechanic from YourMechanic can come out to diagnose your air conditioning system to see where the trouble is.

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: Truck suddenly has no power, won't rev above 4K, and idles fine.

Hello there, many faults will cause a lack of power on your 2003 Ford F-150. The most common would be a failed catalytic converter, throttle body plate malfunction, vacuum leak, throttle linkage, fuel pump, or a shift solenoid. When the...

Q: Car shakes, idles roughly, has difficulty accelerating

You may be having problems with the high pressure injectors in one or more cylinders. The injectors tips get clogged with carbon and do not spray good when the engine is cold. The problem may be random and intermittent. You...

Q: Getting several codes fuel system too lean, Misfire cylinder 3 fuel cut off, misfire detected with low fuel

System too lean means that the fuel mixture has moved beyond the ability of the feedback system to compensate. One thing that can cause that is an air leak that enables air to enter the intake system without passing first...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...