4403 looks familiar. I believe that's what I had. In your case, I'm not sure if 4903 refers to a second sensor on bank 1 or just bank 2. We're talking 986 vs 987.2. When you get a chance, connect your Durametric and at idle go to the "actual values" menu and look at the camshaft deviation on both banks.
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Mihnea
2007 Cayman S Track Car
2004 911 GT3
2016 Cayenne S
2017 Macan S
2008 Cayenne S - Sold
2011 Boxster S - Sold
2007 Boxster S - Sold
2001 Boxster S - Sold
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