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16 years ago
2003 grand caravan sport diagnostic trouble codes
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16 years ago
Ignore the P1684. Look for a small leak in the evap system.
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16 years ago
Is that the code that could also mean the gas cap isn't tight?
Clint
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16 years ago
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16 years ago
I strongly suggest this instead: Assume it is a leaking gas cap. It may be that it wasn't screwed on tight. Or possibly a new gas cap is needed (or it was replaced with an aftermarket cap - and they don't always seal properly, in which case an OEM cap should be purchased and used).
Technically - yes - according to the book, that code indicates an evap system leak. HOWEVER - after hanging out on a couple of Chrysler forums for a few years, I can say that 9 times out of ten, when someone has posted with code P0456 (evap system leak), the problem has turned out to be the gas cap. Most of the time, it was a one-time occurrence (i.e., possibly someone didn't tighten it adequately - in which case, after resetting the code, it doesn't come back).
Before spending any money or other time on this, I suggest you make sure your gas cap is tight, reset the codes, then see if it recurs. If no recurrence, then fuggedaboutit. If it does recur, consider that you may simply need a new gas cap. Exhaust that path before assuming other more PITA problems - and chances are that's as far as you'll have to go.
No guarantees though - if you rule out the gas cap as the problem,
*then* look for other leaks in the evap system.Bill Putney (To reply by e-mail, replace the last letter of the alphabet in my address with the letter 'x')
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16 years ago
Now can I reset the codes by just disconnecting the battery? I was thinking about doing that but its one of those things where you are damned if you do and damned if you don't. I do have an appointment with the garage tomorrw
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16 years ago
Check for a cracked vacuum hose at these 3 places. 1) check the hose that connects to the canister under the vehicle on the left side right behind the cradle 2) check the hose just under the throttle body 3) check the hose from the purge selonoid to the metal line (you should remove the air cleaner to properly inspect) Most of the time these rubber hoses crack. If the hoses look good go ahead and replace the gas cap.Erase codes. If after that the light comes back on don't waste anymore time and take into the garage. They will run a test that takes around 15 mins and you'll know if its mechanical or electrical.
Claude
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16 years ago
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16 years ago
Do the display codes display somewhere or do you have to do this through a garage? And do you erase codes by disconnecting the battery??