DTC- P0452 Help - Pontiac G6 Forum
 
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post #1 of 9 (permalink) Old 08-02-2012, 01:56 PM Thread Starter
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DTC- P0452 Help

My wife ran over a piece of tire on the highway and then her car shut off. I had connect a wiring harness under the car to get it to start back up. the check engine light is now on and we got it checked out and was told we have a code P0452. I was wondering what can I check to find out whats wrong and whats I need to repair.
Thanks in Advance.
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post #2 of 9 (permalink) Old 08-02-2012, 02:19 PM
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If you check over on www.g6performance.com there's a whole thread on what different CEL codes mean. I don't personally know what it is but its a starting point.

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post #3 of 9 (permalink) Old 08-02-2012, 02:24 PM
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P0452 - Evaporative Emission Control System Pressure Sensor Low Input

I read on the Chevy Blazer forums about this, Someone replaced damn near everything fuel system related until they found there was no power even getting to the sensor. A short search revealed a broken wire under the car.
You mention having the reconnect a harness, any idea which harness? Like where was it located? Did you check the make sure all the wires were still connected to the harness? Maybe a wire or two got pulled from the actual plug.
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post #4 of 9 (permalink) Old 08-02-2012, 02:28 PM
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DTC P0452: Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage
i.e.-The FTP sensor voltage is less than 0.1 volt for more than 5 seconds.

Can you post a picture?

I'm guessing that was the harness that runs to the rear ABS sensors & the fuel tank. Probably either a severed wire or a wire pulled out of it's terminal. You wouldn't be the first to have damaged that harness. It is not well protected.




Last edited by greenman; 08-02-2012 at 02:32 PM.
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post #5 of 9 (permalink) Old 08-02-2012, 02:29 PM Thread Starter
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The harness is under the passenger side in front of the rear tire right where the rear door is.
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post #6 of 9 (permalink) Old 08-02-2012, 02:35 PM
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Quote:
Originally Posted by DeepWater Cementer View Post
The harness is under the passenger side in front of the rear tire right where the rear door is.
That's the one. Can you find any physical damage?



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post #7 of 9 (permalink) Old 08-02-2012, 02:36 PM Thread Starter
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Quote:
Originally Posted by greenman View Post
DTC P0452: Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage
i.e.-The FTP sensor voltage is less than 0.1 volt for more than 5 seconds.

Can you post a picture?

I'm guessing that was the harness that runs to the rear ABS sensors & the fuel tank. Probably either a severed wire or a wire pulled out of it's terminal. You wouldn't be the first to have damaged that harness. It is not well protected.
I will post a picture as soon as I can.
Thanks for the response.
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post #8 of 9 (permalink) Old 08-02-2012, 02:39 PM Thread Starter
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Quote:
Originally Posted by J dog View Post
If you check over on www.g6performance.com there's a whole thread on what different CEL codes mean. I don't personally know what it is but its a starting point.

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Thanks I will check it out.
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post #9 of 9 (permalink) Old 08-02-2012, 02:44 PM
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I remember seeing that harness and immediately thought that it can be a future problem possibly resulting in a bulletin. I think I'm going to spend some time trying to hide it better. haha
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