2009 Cayman S, 170K miles. The other day I was on a somewhat spirited drive cruising in 2nd gear at around 5000rpm when the car went into limp mode and threw a P1026 code. I was able to drive it several miles home in limp, but couldn't get it to start again. Had it towed to shop and mechanic says it has no compression and the engine is toast. Has anyone ever heard anything like this before, specifically with a P1026/HPFP code precipitating a supposed engine loss? I replaced the HPFP around a year ago after the same code by this same mechanic, I'm just finding it confusing that this was the specific code that would precipitate a potential engine failure..

 

P1026/HPFP code has no relation to the lack of compression in all cylinders.
If there is no compression in all cylinders, the valves will be bent. I understand yours is an MA121 engine, so it doesn't have IMS. For the timing to be out of sync, a chain must have broken.

 

Furthermore, if the chain broke or the engine went out of phase and bent the valves, you would not be able to drive for several miles, but the car would stall immediately, in addition to hearing loud metallic noises coming from the engine.

 

I agree with the others, if you have no compression in all cylinders, then you'd have some wild mechanical failure and would not make sense that the car could have driven. Not being able to start and a P1026 code sounds like a HPFP or relate sensor issue.

Is this a Porsche independent mechanic? If not, I'd take the car to one. Very hard to believe all the valves are bent.