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Pulled P0452 Code today!???

typicalsituations

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typicalsituations Enthusiast

typicalsituations

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Ever since I've had my Tahoe, the check engine light has been missing. physically gone... It used to be a Texas truck, so I figured they pulled it to pass emissions. Anyway, I pulled a P0452 code today with my code reader that I just bought. Nothing is wrong, but I would like to know whsat would cause it. I've erased it, but it comes back after a while. I know it says Evaporative Emission control system pressure sensor Low Input... Any thoughts?

bartlanz Enthusiast

bartlanz

Posted
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His truck doesn't have that anoying problem. As in NO GAS CAP or GAS CAP LOOSE DETECTION. They didn't add that until the NBS. So strike that from the list.

typicalsituations Enthusiast

typicalsituations

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I just put a locking has cap on it. Its the right cap since i looked my truck up in the book they had and chose the right one. I don't know if that is the problem since I didn't have a code reader before I switched. I'll stick the old one one for a day or so and see what happens. Someone has been stealing my gas, thats why I put a locking one on there. I hope they don't start stealing again!

OUMike Senior Enthusiast

OUMike

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Someone has been stealing my gas, thats why I put a locking one on there. I hope they don't start stealing again!

You should be aloud to shoot someone for that. I hope I catch someone tryin' to steal my gas... :seeya:

typicalsituations Enthusiast

typicalsituations

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Yeah, I set up a camera in the back of the Tahoe with Time lapse and night vision (thanks Sony), I caught the guy next to someone elses car about 5 cars over at my apartment. You couldnt see him very well or see where he went. Funny thing is, a guy that lives a few doors down was outside one day and he went in a for a second, and I was checking my mail, I walked by his door and there was a small gas can and a makeshift siphon.... I was PISSED, but I can't prove it. I tried to get him on video up close, but He never tried it again, and to tell you the truth, I haven't seen him, OR his motorcycle in a few weeks. I wish you could shoot people for that, I would shot at him.

frdfandc Enthusiast

frdfandc

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Anyway, I pulled a P0452 code today with my code reader that I just bought. I know it says Evaporative Emission control system pressure sensor Low Input... Any thoughts?

You need a sensor replaced. Basically the PCM is not getting the proper input from the sensor. I had the same code on my 2003 silverado. The dealer had to replace one of the evap system sensors.

frdfandc Enthusiast

frdfandc

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Gas mileage can be affected, possible drivability concerns can develop, but not guaranteed. I do know that most states that have emission inspections will fail a car for having the check engine light on.

typicalsituations Enthusiast

typicalsituations

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I looked under the truck and there is a wire hanging down from the body near the gas tank. It looks like it has four wires in it and its one of those CLIP type connectors. Its NOT a trailer light connector. It has the green rubber boot and all. I cannot find where this wire goes and I'm wondering if it has anything to do with that code.

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