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When the ac is on it triggers my check [engine](/topics-e...


When the ac is on it triggers my check [engine](/topics-engine-toyota/) light Mechanic's Assistant: Does the light stay on, or does it blink? Stays on And car goes into limp mode Mechanic's Assistant: What is the ...

When the ac is on it triggers my check [engine](/topics-engine-toyota/) light Mechanic's Assistant: Does the light stay on, or does it blink? Stays on And car goes into limp mode Mechanic's Assistant: What is the make/model/year of your car? 2007 Toyota [camry](/topics-camry/) 2.4 Mechanic's Assistant: Are you fixing your Camry yourself? What have you tried so far? I purchased a knock sensor and my daughter is in Phoenix trying to get a quote Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Is it my knock sensor that's the issue?

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Responses

Automotive Expert
"Hi, I'm Roy. Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply momentarily." You will see an option to receive a phone call prompted by the website, you can agree to or decline. If you do not wish to use the Phone Service, we can continue chatting this way back and forth until you are satisfied with my help. Who Am I speaking with today ?

Jenn
Automotive Expert
Hi! Jenn Hope I can help sorry to hear about your car going into limp mode do you have the code that is stored ? let me know Thank you Roy!

Hi RoyNo the car is in Arizona I'm in Wisconsin
Automotive Expert
Hi! Did you get the code number ? Auto zone will check the codes for free

I could try to get her to have it scanned
Automotive Expert
I would do that first and see what codes you have that caused limp mode

I've had that code ran so many times. I just can't remember what it wasIt only happens when the ac is working hardshe doesn't use it since it always triggers the light and limp modeAlmost as of it senses a vibration in the engine.Might be the compressor bearings causing a shake perhaps?
Automotive Expert
It could be a short also

Bad bearings?A short?Where?
Automotive Expert
electrical issue when ac on it would need to be inspected the A/C should not cause limp mode unless you have a code for a sensor

Correct. I reset the computer more than a few times and now it just happens whenever. With or without ac
Automotive Expert
you need to have the codes cleared and see what comes back on then you will know

But the ac issues are where it started
Automotive Expert
it could cause a issue with one of the sensors that is why you need a code first it will not go into limp mode unless you have a issue

I just told her to run the car to auto zone and have the codes ran
Automotive Expert
Okay

Yeah there is definitely an issue. Guess we'll see soon enough
Automotive Expert
just let me know

Will do thanks!!
Automotive Expert
Okay
Automotive Expert
Just post back here if I can help Thank you Roy!

Sorry I'm still waiting on.codes
Automotive Expert
no problem just let me know Thanks

Po328

Customer attachment 2/22/2021 12:37:52 AM

3 codes came up the first 2 are minor exaughst leaks.I know what those areThat po328 is my problem
Automotive Expert
That is your knock sensor on the back of the engine block it detects when the engine pings or knocks will set timing.

it is the knock sensor
Automotive Expert
Most the time if you have that code the sensor needs to be replaced

That's what I thought
Automotive Expert
Okay let me know if you have any questions Thank you

Thanks!!!
Automotive Expert
Your welcome !

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