Here is the story, looking for any advice at this point! Took 2007 GTI-se 155hp to dealer for oil change. After pick up rode on lake for 10 minutes, received oil alarm and code p1520. Secured engine, lit it off, rode it up to 3500 rpms, same result, oil light, alarm and code p1520. Checked oil level, looked perfect. Took it back to dealer, told me they checked it out, cleared the code and ran fine. Took it back to lake, w/in 10 min SAME RESULT! I've read it could be p0520, ops, would make sense but could be 6 other things as well. Any ideas or assistance would be appreciated.