P0452 evap pressure sensor circuit fault fixes? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 07-08-2014, 12:42 PM   #1
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Default P0452 evap pressure sensor circuit fault fixes?

I received this code and had two suggestions: either the sensor itself is faulty or their is an air leak. I want to check for any leaks first. Where, on a 2001 Bonneville, are the air hoses located? Are there any common locations on this model where leaks generally occur.
I currently have my SES light on. Thanks for any insight. This forum has been a great resource.
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Old 07-08-2014, 12:50 PM   #2
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on a gm the code description says circuit fault low. so its the sensor or the plug or wires to the pcm. on that vehicle i know they put a pump access port on top of the tank, you may be able to access the sensor there.
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Old 07-09-2014, 03:11 PM   #3
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Smile Fuel pressure sensor installed, light'* out

Thank you for your advice regarding the p0452 code. I replaced the part. That coupled with cleaning the MAF sensor led to my SES going out. This forum is two for two when it comes to the auto issues I have had. Thanks again.
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Old 07-09-2014, 03:13 PM   #4
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thanks for updating your fix, good to hear
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