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Old 08-28-2007, 01:46 AM
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P0442 Evaporative Emission Control System Leak Detected (small leak)

I had my buddy run a diagnostic test and it spit back code P0442, which is "P0442 Evaporative Emission Control System Leak Detected (small leak)" Any idea how much this will cost me to fix, where do I get the part?

Last edited by wboo; 08-28-2007 at 02:54 AM.
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Old 08-28-2007, 06:58 AM
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Tighten your gas cap and drive the car for a week. Your cap may not have been put on tight enough the last time you got gas. That'll do it every time. And it's free.
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Old 08-28-2007, 12:22 PM
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Tighten your gas cap and drive the car for a week. Your cap may not have been put on tight enough the last time you got gas. That'll do it every time. And it's free.
I do make sure the gas cap is tight, I make sure it clicks when closing it tightly. The engine light has been on for a months.
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Old 08-28-2007, 06:04 PM
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SERBoard.com :: View topic - ECU codes and reset procedure Here. try this.
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Old 08-28-2007, 10:45 PM
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You have to find where the leak is coming from first. The fuel filler neck, gas tank, charcoal canister and lines in between all the way back up to the purge volume control valve are part of the system. When the ECM sees a small leak in the system from the evap pressure sensor it turns the light on. You need a Consult with mighty vac or a fog machine to find the leak. I would recommend taking to dealer.
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Old 08-28-2007, 10:53 PM
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If your car is older I would try buying a new gas cap before doing anything.
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Old 08-28-2007, 11:13 PM
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Quote:
Originally Posted by wboo View Post
I had my buddy run a diagnostic test and it spit back code P0442, which is "P0442 Evaporative Emission Control System Leak Detected (small leak)" Any idea how much this will cost me to fix, where do I get the part?
Have your buddy clear the code from the computer and see how long it takes to come back, if it comes back at all that is. I've had this code show up, cleared it and it never came back. Cheapest fix I've ever had!
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Old 08-28-2007, 11:25 PM
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If your car is older I would try buying a new gas cap before doing anything.
I think I already replaced the gas cap.
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Old 08-29-2007, 04:14 AM
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whats the mileage on the car?? and year? Federal Law states that any car 50k/5 years or younger will be covered with warranty from the car manufacturer when it comes to Emission Controls.
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Old 08-29-2007, 01:02 PM
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whats the mileage on the car?? and year? Federal Law states that any car 50k/5 years or younger will be covered with warranty from the car manufacturer when it comes to Emission Controls.
I am around 65k
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Old 08-29-2007, 02:17 PM
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I am around 65k

Take it back to the dealer...
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Old 08-30-2007, 03:20 AM
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Check the area of the filler neck where the gas cap gasket meets it. Mine is all rusted to hell and couldn't hold a seal no matter how tight the cap is. I've had to clean mine with a wire brush many times after getting the 0442 code. I finally cleaned it real good and used some gas tank liner gel which is used to line the gas tanks of older motorcycles and I haven't had a problem since.
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