A/C off due to high engine temperature warning, now car will not start

Good morning,

It is normal for the AC to be disabled when the coolant sensor sends a high-temperature signal to the ECM. It does that to lower the load on the motor.

Driving like this, you may have damaged the engine as it may be overheating. There is no code for this at all since it is a mechanical issue.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

I attached a check sheet for the overheating tests.

Can you upload a video of it cranking so I can hear what you hear?



Roy

I should have been more clear on the AC warning. I live in Minnesota. It's freezing right now and have not run my AC since last August. The warning came on the first time as soon as the car was started. Later that day, there was no warning when started. Then the next day, the warning was on again. I have not run my AC. My heat was blowing warm, not hot like it usually does. I will get a video up soon!

Also, the temperature gauge stays at cold and does not budge.

This is so weird. It just started... But there's still that AC warning light. Mind you it sat in my garage over night and wouldn't start but cranked over. Now it started. There is a bit of a sweet smell coming from the engine right now as it runs... Check out the video. I still have it running to make sure my battery recharges after the several attempts of turning it over earlier this morning in case it doesn't start again. Temperatures in Minnesota have not been over 30 degrees these past couple of days. There is coolant in the reservoir. I think my car doesn't want to be sold as I've been car shopping the past couple of days, lol.

Fan still running after car shut off which has been the case the past couple of days. I let it run for about 10 minutes. Going to wait a little while and try to restart again.

Okay, if you use your defroster, the AC is running. That is one time it runs no matter what the temperature is outside.

As far as the gauge, you could have a bad sensor which I posted before with the location and procedure. That is what controls the gauge.

You may also need a thermostat as well.

https://www.2carpros.com/articles/replace-thermostat

Roy

The car couldn't possibly overheat from a cold start though right of the bat though correct? Because the first time we seen that AC warning was off a cold start.

Why did you clear the code? What was the code? Clearing does absolutely nothing and could lead in the direction of the failure.

Roy

It may not be overheating but since the coolant temperature gauge is not working, that may the reason for the indication and the fan coming on.

I need that code.

Roy

There's no code, I meant the AC Off Due to High Engine Temp message...

I'm going to see if I can drive it up to O'Reilly's and get a code...

You said the check engine light was on?

Let me know.

Roy

Or AutoZone.

The check engine light came on for the first time this morning. Was never on the past couple of days.

Is it still on?

If you cleared it, that is a problem.

Roy

Yes the check engine light still appears now. I just cleared the AC warning message and that was all.

Okay, good.

Let me know the code.

Roy

Second start after letting it sit for a little bit. Shaky start this time but it started...

Codes are P111E (temperature sensor) and P0119. The latter of the two codes he said was probably coming up because of the faulty temperature sensor. Could that be causing all the problems?

Good.

Keep me updated.

Roy

I just dropped it off at my mechanic to have a look at it. Told him to just change out the sensor to see if that helps. He'll be able to look at it a little further and see.

Keep me updated.

Roy