Question about 2002 Jeep Liberty

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2002 jeep liberty

Engine check lights on and it appears in the analyzer large evap leak

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  • Anonymous Oct 04, 2008

    I have the same problem and have replaced the purge valve solonoide,change spark plug with dimond e3 plugs also had the system on a smoke machine and had a large hole under the gas tank. finally went bought new gas cap from dealer hope this will cure the problem

  • Anonymous Mar 18, 2009

    error code 455 and 422

    changed gas cap not issue

    lite keeps coming on

  • Anonymous Mar 28, 2014

    Is there a special tool for checking and fixing code P0441 for 2004 jeep liberty


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I found that the hoses for the Evap. system near the gas tank had split on the ends and was causing a leak.

Posted on Oct 08, 2008

  • Tommy Pollock
    Tommy Pollock Oct 08, 2008

    p0455= large leak in evap. system.

    I found that the hoses for the Evap system at the rear of the vehicle near the fuel tank had started splitting at the ends and causing leaks. There is a small pump that pulls a vacuum on the system at start up to test it. I am pretty sure that if you get under it and examine those hoses you will find this condition. The hoses are just plain rubber hoses (cheap) I took the hoses to auto zone and matched them up to a heater hose that was similar and was a much better quality hose that had nylon reinforcement it it. (so it won't split again) I feel that many Jeep/Dodge products probably use this same type of hose and will have failures soon if not already.

    Also, when you fix this problem, Reset the codes.....Take it somewhere or unhook your battery.


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I had the same problem.

I got the engine codes evaluated at two place and got the "gross emission/low emission..." (something like that) readout. I was told by both places to replace the gas cap with an OEM, which I did. The light never turned off. Then I got the fuel system cleaned, replaced the spark plugs and oil changed...The light stayed on. These were expensive remedies!

Then my husband suggested I replace the solenoid. We bought it from the dealership for $25. He replaced it and the light turned off and hasn't been back on.

Yay DH!

Hope this helps.

Posted on Jan 10, 2009

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The Code was P0455 What is this and how to fix

Posted on Oct 03, 2008


Posted on Jun 26, 2008

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I have a 2005 Jeep liberty and I recently lost my gas cap(4 days ago). My check engine light came on and I am wondering if it is due to the gas cap being lost. Going to buy a new one today.

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2003 Jeep Liberty

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Dec 18, 2009 | 2002 Jeep Grand Cherokee

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Troubleshooting code # 0442 on 2002 Jeep Liberty

Im guessing its a P0442. That means:
Causes of this could be a few things.
I recommend replacing the gas cap. Then take it to an auto place to get them to erase the code.
If it comes back on then...
Under the hood is a small green cap. That is the EVAP line. Follow that all the way to the gas tank and see if you see any leaks. If you do, replace/repair it.
If you dont then the only thing you honestly can do is take it to a mechanic with an EVAP Emission Leak Detector [EELD]
Good Luck!!

Nov 02, 2009 | 2002 Jeep Liberty

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PO455 odb scan code evap. system large leak. 2003 jeep liberty sport 42,000 miles Where do I start to shoot the problem

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Sep 25, 2009 | 2003 Jeep Liberty

1 Answer

Check Engine Light is on

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Jan 13, 2009 | 2002 Jeep Liberty

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