2002 Dakota codes

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John Carrington - 09 Nov 2006 18:28 GMT

A couple of months ago the check engine light came on. The codes were P0300,
304, 305 and 306. I used fuel injection cleaner with two tanks of gas.
Subsequently the check engine light went out and has not come back on for
weeks. It is still not on, but the codes remain. Do I still have the problem
indicated by the codes?

John
2002 Dakota 3.9, QC, auto and for the REDNECKFROMHELL it is Pat. Blue

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Tom Lawrence - 09 Nov 2006 19:06 GMT

> Subsequently the check engine light went out and has not come back on for
> weeks. It is still not on, but the codes remain. Do I still have the
> problem indicated by the codes?

No - if the condition isn't active, the check engine light won't illuminate,
but the codes are still stored for diagnostic purposes. They will
eventually clear on their own, after a certain number of ignition cycles -
but if the CE light isn't on, you don't need to worry about it.

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TBone - 09 Nov 2006 19:30 GMT

The light going out usually indicates that the PCM no longer sees an active
problem but the codes will be retained for a period of time to aid in
diagnostics should the problem be of an of an intermittent nature. You can
clear the codes by disconnecting the battery for about 5 minutes or if you
have access to a code reader with that capability and if they do not return.
problem solved.

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> A couple of months ago the check engine light came on. The codes were P0300,
> 304, 305 and 306. I used fuel injection cleaner with two tanks of gas.
[quoted text clipped - 4 lines]
> John
> 2002 Dakota 3.9, QC, auto and for the REDNECKFROMHELL it is Pat. Blue

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John Carrington - 10 Nov 2006 00:27 GMT

Thanks Tom L. and TBone

John

>A couple of months ago the check engine light came on. The codes were
>P0300, 304, 305 and 306. I used fuel injection cleaner with two tanks of
[quoted text clipped - 4 lines]
> John
> 2002 Dakota 3.9, QC, auto and for the REDNECKFROMHELL it is Pat. Blue

Reply to this Message