My check engine light came on and hasn't cleared after about 100 miles of driving. Car has 7000 miles on it and is running fine. It's going to the dealer tonight, will report on what the problem was. Apparently it's a good thing that the light is solid, and not flashing.

 

Try opening and closing the fuel tank cap. My 997 did that when I was running too low on gas.

 

it happened on my '04 Cayenne S. I disconnected battery for few minutes, the check engine light was reset.

 

Thanks, w00t, tried the gas cap but no go. Battery is a bit harder to get at as I believe it's under the seat.

 

Picked my baby up-problem was a small vapor leak which they found in the computer history; said it would have cleared with a few more drive cycles, so I guess the moral of the story is to drive the car for several days before going to the dealer, mine had gone in two days after the light came on.

 

As I was driving a CT from the Leipzig car pool around their track,I slightly drifted into the "Laguna Seca Corkscrew"turn and accelerated out of it... causing the "PDCC failed" light to come on
All we had to do was turn off car and start again...

 

i had the same problem and it turned out to be a bad cam selonoid, they replaced it and it's gone