[Wayne 962]

I had the same problem on my 959. Whether it's a 959 or a 996, you still want to make sure it's the sensor, not the engine. So, I replaced the sensor. It's pretty easy to do - it's in the engine compartment - I have a tech article coming out on this soon. Definitely replace the sensor first (it is actually the same sensor that is used on the 959), as these fail *all* the time. We sell a ton of them.

-Wayne