Q: A/C Off Due To High Engine Temp

asked by on January 30, 2017

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?
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・Fair and transparent pricing

Get a quote

What others are asking

Changed my ignition now all my dashboard lights stay on

The ignition switch if it is what you are talking about, may have been installed in the wrong position and is causing the dash lights to be on when the key is off. This would mean that when you turn...

The Reduce Engine Speed/ Service Stability comes on in my car. We had it scanned and they said it was the THROTTLE/PEDAL POSITION

It sounds like the code may not have been properly cleared or potentially, there may be some wiring issues with the wires running to the throttle position sensor. I would suggest having a professional from YourMechanic come to your location...

Oil pressure went all the way t 0 while driving

The oil pressure will usually drop down to zero when one of two things are happening. Either the motor is in fact low on oil or the oil pressure sending unit is not working properly and may be producing a...

Related articles

A Buyer’s Guide to the 2012 Scion iQ
The The 2012 Scion iQ delivers the type of driving experience you would expect from a microcar. The higher fuel economy coupled with a tight turning radius provides an excellent vehicle for those who do a lot of city driving...
A Buyer’s Guide to the 2012 Mazda 6
The The Mazda 6 is a luxurious alternative to the everyday family sedan. It has decent fuel economy with an upscale look on both the inside and the outside. The vehicle also handles well on the highway and is comfortable...
A Buyer's Guide to the 2012 Lexus IS
If If you haven’t heard of the 2012 Lexus IS, you’re not alone. This sports sedan is incredibly underappreciated. However, that doesn’t mean it’s not worth considering for your next car. Key Features The 2012 Lexus IS can be purchased...