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DME Camshaft Adjustment Fault

Engine

Vehicle Information: Year: 1998; Engine (type, size, modifications): 2.5 Liter stock; Total Mileage: 32000; Transmission: Manual;

I recently bought this car used from a local Porsche dealer. After driving it a week for maybe 150 miles, the Check Engine light came on though the car ran just fine. After 3 days it just as mysteriously went off. I took it to the dealer a few days ago for some non-engine related warranty work and asked them to pull the DME fault codes that set the Check Engine light on. They are: 178 - Camshaft adjustment, bank 2; 62 - Misfire - emissions relevant; and 55,53 and 54 - Cylinders 4,5, and 6 misfire. The first code concerns me as I believe this is a problem with Variocam. When I asked the dealer's service writer about the codes, he said not to worry about it and if the light comes back on to bring the car back in to his shop. I noted in the documentation that came with the car that the dealer had replaced the camshaft adjuster on the driver's side prior to my purchase. I don't know if the driver's side is bank 2 or not. Since I have a short warranty window with this car, should I pressure them to fix bank 2? The car seems to run fine, but I'm worried if I'm facing a destroyed engine sometime in the future. Thanks.

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