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post #1 of (permalink) Old 04-28-2008, 08:45 AM Thread Starter
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Pull Codes

Is there a way to manually pull the codes from my 2003 TJ? I performed a search and found the procedure for a Nissan Maxima, but I am trying to get the code first. I will make some calls to the autoparts stores today and try to get them to pull the code and reset the OBD light. After they pull the code, I will probably sent out a new request for 'What does this code mean.'

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post #2 of (permalink) Old 04-28-2008, 08:49 AM
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i dont know the answer for that....but keep in mind auto-zone and the like can pulls and clear codes for free!

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post #3 of (permalink) Old 04-28-2008, 02:53 PM
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Code reader or a scan tool... no more key-dance.
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post #4 of (permalink) Old 04-28-2008, 04:48 PM Thread Starter
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My wife got the code pulled at Autozone, the code is P0442. A Google search shows

P0442 (M)
Evap Leak Monitor Medium Leak Detected
A small leak has been detected in the evaporative system.

So what does this mean to me? Beside a loose fuel cap as the manual indicated as a possibility, any other things to look at? If it was a loose fuel cap, how long till the OBD resets automatically?

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post #5 of (permalink) Old 04-29-2008, 06:06 AM
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Quote:
Originally Posted by Mark2003 View Post
the code is P0442. A Google search shows P0442 (M)
Just to verify, did you make sure that you were looking at a code list for your specific vehicle? Not all of the codes are consistent across all vehicles.

On my Subaru the Factory Service Manual explains that some codes clear as soon as the condition returns to normal, and some will clear after three driving trips where you meet certain parameters.

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post #6 of (permalink) Old 04-29-2008, 07:31 AM
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Quote:
So what does this mean to me? Beside a loose fuel cap as the manual indicated as a possibility, any other things to look at? If it was a loose fuel cap, how long till the OBD resets automatically?
...go HERE and download a 45mb FSM.
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post #7 of (permalink) Old 04-29-2008, 07:57 AM
 
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You can turn the key on and off 5 times (do not crank) and the codes will appear in the mileage area.
Then you can go here: Tech - TJ Error Codes - GETAHELMET.COM
to look up the codes.
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post #8 of (permalink) Old 05-01-2008, 09:38 AM Thread Starter
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LEVE, thanks for the link to the service manual.
Nick, turning the key on and off three times shows the codes in the mileage indicator.

Well the codes are actually P0442 and P0455. So it is or was showing a both the P0442 - Evap Leak Monitor 0.040" leak detected and P0455 - Evap Leak Monitor large leak detected.

The service manual does not specifically note what priority level these codes are (page 25-7). It notes that after 3 "good trips" the light is extinguished and after 40 warm-up cycles the counter is reset. But for these trips there are several criteria, one of which is time. Since my daily commute is less that 10 minutes, I may not be getting credit for a possible loose gas cap fix.

Since this is my daily driver, I called the dealer and will be bringing it in later today. They commented on performing a smoke test. Therefore my question is, shouldn't they just reset the OBD system and see if the codes are still there or do they have to look for a problem first?

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post #9 of (permalink) Old 05-01-2008, 03:43 PM
 
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There may be a couple things they can look at, but most likely will reset and have you see if it comes on again after you make sure gas cap is tightened after every fill up.
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