I experienced a very strange thing today with my 997.2 PDK turbo. I drove to a store about 10 miles from my house...no issues. When I left the store to return home, I pulled out of the parking lot and almost immediately I had to stop at a red light. While sitting at the light the car bagan to idle very rough. At first I thought it might just be some bad gas in the system. When the light turned green I tried to accelerate, but the car sputtered and shook like the transmission was slipping. Then the PSM light came on, check engine light flashed, and the PSM Failure message popped up. I couldn’t get the car to go any faster than 25 mph as it shook its way into another parking lot where it quickly shut it off. I also noticed a burning smell like clutch or brakes. I called the dealer and after about 10 minutes I restarted the car and the warning lights were no longer illustrated. They informed me that if the warning lights were out it was ok to drive it to the dealership for diagnosis. It drove fine all the way to the dealership, even at 70 mph on the highway. This all occurred Saturday afternoon, so I won’t hear anything from the dealership until Monday at the earliest. Has anyone experienced this? Is this an engine or transmission issue, or neither. Any insight would be appreciated.

Sounds like bad spark coils? What year?

2010

Thanks for the feedback. The part that concerned me the most was the shaking, shuttering and complete lack of power. The smell was concerning too. I’ll be sure to post what the dealer finds. I’m the second owner, so thankfully it’s still under CPO warranty.

Just heard from the dealership. As it turns out it was a faulty ignition coil. It caused the engine to misfire triggering the PSM Failure and the CEL.