P-code 1530 in 97 Boxster

[debster]

Thanks for the insight.

I looked up IMS failures online and have emailed NL Engineering for their advice.

Also stopped by a local Porsche dealer, whose tech said he hadn't seen much of these codes, and hadn't observed a consistent cause. His guess was a Variocam solenoid as the most likely cause.

This car has 37398 miles, and the codes showed up after I changed the oil and filter this spring, using a Hengst filter and 15W-50 Mobil 1. Hope the oil change had no influence.

Any potential cause appears to require dropping the engine and opening it up for inspection. Right now I'm armed with a Bentley manual and a desire to minimize how many thousands of dollars this will entail before it's over. Can a person with reasonable engine/mechanical experience, a service manual , and online resources expect to tackle this work successfully?

Thanks for any and all advice.

Patrick Keller