Everytime I flash my car with UpRev I get a U1024 and a U1000 that sits in the Permanent Codes for a few months and then goes away on their own. I was told this happens because UpRev disconnects these items from the network when it is uploading a tune to the ECU. I would say just as long this code is showing in the Permanent Codes and not turning on the CEL I wouldn't sweat it.
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2014 370z Touring Sport, Stillen supercharger, cat-back and oil cooler
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