2003 S350 engine light on above 4000rpm

[Grob]

Hi guys

Hope somebody can help. My car throws up these faults and the engine warning light comes on under acceleration after about 4000rpm. I can reset the codes and the engine light goes out and drives fine otherwise as long as i don't go above 4000rpm.
Spark plugs and leads, coils, fuel filter, air filter, MAF are all recent.
Any ideas?

P2050-001
P2050-032
P2050-064
P2054-001

 

[Grob]

Still can't get to the bottom of this. :-(

 

[Grob]

Finally got to the bottom of this issue

 

[DSM10000]

Finally got to the bottom of this issue

Which was...........................?