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post #1 of 6 (permalink) Old 03-07-2009, 05:59 PM Thread Starter
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Code P0455 =

The OBD II llight came on today, I did self diagnostic test that Ahmed shared with us came up P0455 which when googled it states that it is a evaporative leak in emissions. I checked other forms and it could be bad gas, gas cap inoperative or exhaust leak. I took negative terminal off battery put break a few times (was said to do in the TJ forum) replaced terminal and did a diagnostic test again which produced no error codes. And OBD II light is no longer on. If I have a problem wouldn't the computer still see it regardless if I disconnected battery? I'll keep ya posted if light returns.

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post #2 of 6 (permalink) Old 03-07-2009, 06:08 PM
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I had same thing with different code:
https://www.jeepcommander.com/forums/showthread.php?t=7381&highlight=code

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post #3 of 6 (permalink) Old 03-07-2009, 06:20 PM
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You'll probably have to drive it for a little while and see if it comes back on.

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post #4 of 6 (permalink) Old 03-07-2009, 06:29 PM Thread Starter
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Quote:
Originally Posted by jeep5253 View Post
That is strange 2 different codes same issue. Have you had any more issues with light coming on

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post #5 of 6 (permalink) Old 03-07-2009, 08:05 PM
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Quote:
Originally Posted by Ranger6882 View Post
That is strange 2 different codes same issue. Have you had any more issues with light coming on
No.
.........

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post #6 of 6 (permalink) Old 03-07-2009, 08:37 PM
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I think that code, (if it is the gas cap code is a transient error) There must be several ways to throw that code. It may be from a condition that is outside of the normal range from some sensor that is related to the fuel supply or exhaust gas recirculation.

When I got the check engine light and my gas gauge went to empty on a full tank it also reset with a disconnect of the ground cable. Might be one of those situations where if the computer is confused or if the reading is abnormal it just throws a code anyway as the default response.

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Maybe the two will meet up soon edit: they did , I now have 2,now gave 1 away...and got it back again.
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  Jeep Commander Forums: Jeep Commander Forum > Jeep Commander Discussion > Regular Service / Maintenance > Diagnostic Trouble Codes (DTC)

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