Some DTCs are "permanent" (until you manually clear them) and others will clear themselves when the error condition disappears or a drive cycle has been successfully completed. Make sure that your scanner is looking for all DTCs. If nothing shows up, you might want to leave the scanner connected for a while so you can read the error code if it happens again.
I'm guessing that you had an injector problem (piece of dirt?) that eventually cleared itself, but that's just a wild guess at this point.
Edit: Read through the topic you linked to. Have you checked the crank position sensor? It could cause your symptoms.
Last edited by SouthArk370Z; 05-05-2013 at 12:13 PM.
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