P0442 Error Code Jeep Liberty
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Jeep Liberty Evap System Diagram
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2002 Jeep Liberty Evap Leak
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code. I think... User Name Remember Me? Password Register to remove these ads. KJ General Discussion Figured out my P0442 code. I think...This is a discussion on Figured out my P0442 code. I think... within the KJ p0442 jeep grand cherokee 2004 General Discussion forums, part of the Jeep Liberty - KJ (02 to 07) category! Register to remove 2003 jeep liberty evap system diagram these ads. It's free! As most of you probably know a while back my KJ's Check Engine ... General discussion forum for KJ Liberty's p0442 jeep grand cherokee 2002 Community Links Social Groups Pictures & Albums Members List Search Forums Show Threads Show Posts Tag Search Advanced Search Go to Page... 2Likes Top All Page 1 of 2 1 2 > LinkBack Thread Tools Display Modes 07-15-2007, 12:51 http://repairpal.com/obd-ii-code-p0442-jeep PM #1 (permalink) timmer Platinum Supporter Join Date: Sep 2006 Location: South Louisiana Posts: 509 Figured out my P0442 code. I think... Register to remove these ads. It's free! As most of you probably know a while back my KJ's Check Engine light came on and I was very excited because I had an excuse to buy a scan tool. Anyway, I've been monitoring this code for about a month or so to see if I could detect any pattern http://www.jeepkj.com/forum/f196/figured-out-my-p0442-code-i-think-33083/ to it. I did, but it was subtle. First off I should say that I discounted the gas cap right away; I always tighten it and I never forget to put it on. So, I cleared the code and about every tank full of gas I would get it back but only while driving on city streets. I drive a lot of long distances and not once did it throw a code at highway speeds. Also, last week I got a P0445 code with the P0442; that told me something was deteriorating. Hmmm, I did a Google on the code but there's not really any solution to the code on the net. There was several references to the Vapor Canister though and I started there. After about 1 minute under the Jeep I found a dry-rotted and cracked piece of hose to the Vapor Canister that mates to the Fuel Vapor Line. I replaced that hose and I have yet to throw a code again after two tanks of gas. Fixed? We'll see, but here a pic of the hose: For those of you that don't know, I have an 02 Limited so your setup may be different. The pic came from my 02 manual and the P/N of this hose is 53013091AF - TUBE, Fuel Vapor. Share Share this post on Digg Del.icio.us Technorati Twitter 07-15-2007, 01:44 PM #2 (permalink) Dave Administrator Join Date: Feb 2006 Location: on here Post
Possible causes - Missing or loose fuel cap- Incorrect fuel filler cap used- Fuel filler cap remains open or fails to close- Foreign matter caught in fuel filler cap- EVAP canister or fuel tank http://www.engine-codes.com/p0442_jeep.html leaks- EVAP system hose leaking- Fuel tank leaking What does this mean? Tech notes The P0442 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). Loose fuel tank filler cap is the most common cause that triggers the P0442 code. What does this mean? When is the code detected?Malfunction is detected when EVAP control system has detected a small leak. Possible symptoms- Engine Light ON (or jeep liberty Service Engine Soon Warning Light)- Possible a noticeable fuel odor caused by the release of fuel vapors P0442 Jeep Description The Engine Control Module (ECM) tests the Evaporative Emission (EVAP) system for the following conditions:- Large and small leaks- Excess vacuum- Purge flow during non-commanded conditions- Fuel Level and Fuel Pressure sensor faults- EVAP Purge and Vent Valve faultsThe ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in jeep liberty evap the EVAP system. The ECM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the conditions are met in order to apply an engine vacuum to the EVAP system. The ECM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. This test verifies if a vacuum can be achieved in the EVAP system. Failure to develop a vacuum may be caused by a large leak or a restriction. Related Information Repair Importance Level: 1 1=Low 2=Medium 3=High Repair Difficulty Level: 3 1=Easy 2=Moderate 3=Hard AutoCodes.com FREE Android App Search Codes By Make Acura Audi BMW Buick Cadillac Chevrolet Chrysler Dodge Eagle Ford GEO GMC Honda Hummer Hyundai Infiniti Isuzu Jaguar Jeep KIA Land Rover Lexus Lincoln Mazda Mercedes-Benz Mercury MINI Mitsubishi Nissan Oldsmobile Pontiac Saab Saturn Scion Subaru Suzuki Toyota Volkswagen Volvo Browse All Codes For Specific Model YearBeta Ford F150 1998 Ford F150 1999 Ford F150 2000 Ford F150 2001 Ford F150 2002 Ford F150 2003 Ford F150 Ford Fusion 2006 Ford Fusion 2007 Ford Fusion 2008 Ford Fusion 2009 Ford Fusion 2010 Ford Fusion 2011 Ford Fusion 2012 Ford Fusion Honda Accord 2008 Honda Accord 2009 Honda Accord 2010 Honda Accord Honda Civic 1996 Honda Civic 1997 Honda Civic 1998 Honda Civic 1999 Honda Civic
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