Hello, I am new here. I have a 2006 S65. It starts and runs fine and drives good using moderate throttle. When i push down harder, I now get a check engine light and some of the cylinders go away.

I ran a diagnostic and got this:

P2050 Misfiring, Damage TWC (P0300) stored
P2052 Misfiring Cylinder 5 Damage to TWC (P0305) current and stored
P2054 Misfiring Cylinder 6 Damage to TWC (P0306) stored

I clear the faults and the car runs normally as before. I have ran it several times, sometimes I get a cylinder 4 fault as well. When I come back it is not firing right for sure, but it clears up when I clear the faults.

Any help on this would be appreciated.

 

Forgot to mention, the car has 65K miles - never had any issues with it. I don't drive it that often anymore, maybe 20 miles a week.

 

Problem solved. Right coil bad. Changed all the plugs anyway.

 

thanks for the fix!! I bet the coils were pricey. sweet car!