Skip the auto shop - Our mechanics make house calls

Q: A/C Off Due To High Engine Temp

asked by on

I have a 2012 Chevy Cruze and as I was driving a message came on my dash that said ac off due to high engine temp what does this mean and why would it come on

My car has 59000 miles.
My car has an automatic transmission.

This is a safety measure programmed into the engine control unit. If it senses the engine temperature is high, or is not reading engine temperature at all, it would deactivate the air conditioning system. The a/c compressor is driven my the engine and creates a load on it. That load increases engine temperature. If the ecu already thinks the engine temperature is incorrect or too high, it deactivates the a/c to reduce that load and temperature. The engine temperature can be above normal due to a circulation problem. If the thermostat is not opening fully or not at all, coolant will not circulate through the engine to the radiator for proper cooling. If the coolant temperature sensor is faulty and not providing readings to the ecu, the programming will deactivate the a/c also to protect the engine. Another issue can be air flow. When the a/c is turned on, the radiator fan will typically turn on as well. first or all to provide air flow through the a/c condenser to provide you with cool air, and second to keep the engine temperature within range. If the fan is not coming on for any reason, the engine temperature will climb as well. Have a certified technician inspect the vehicle as soon as possible. Continued driving with am engine running hot can cause severe engine damage.

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!
  1. Home
  2. Questions
  3. A/C Off Due To High Engine Temp

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: I think my control arm is bad after a covered repair.

Hi there. I would tend to believe, if something was improperly repaired after the accident, the shaking problem would have showed up right away. There is a chance, a suspension component was damaged and overlooked at the time of repair...

Q: What would cause a popping noise and shaking when turning in my 2006 Honda Civic.

Hello. Most of the time if you get a popping noise when turning it is because you have worn out cv axles. When the joints in the axles where out this noise will occur. They would need to be inspected....

Q: Heating issue

Hi there: It's possible that you have an obstruction inside the heater core that is causing the malfunction. However, it's also possible that you might have an electrical fault, such as a bad fuse, faulty relay or heater control valve...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.