My Volkswagen Passat 2007 engine shakes and check engine light blinks when Hot

What is your question?

2007 Volkswagen Passat ,I've changed the spark plugs and coils but still when the car is hot and a climb a hill ,the engine shakes as if the coils are not working and the check engine light blinks but when I park it for some few hours ,it comes back to normal.what else might be the problem

What makes this problem better or worse?

It's worse when the engine is hot

How long has your 2007 Volkswagen Passat had this problem?

Few weeks