Is it possible that the following fault codes can all be down to a vacuum leak on the crank case vent hoses?

28/255 - P1158 - fuel trim adaptation additive low bank 1
29/255 - P1158 - fuel trim adaptation additive low bank 2
26/66 - P0171 - system too rich bank 1
40/1 - P0420 - catylist system efficiency below threshold bank 1

regards

tony

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E61 525i 2004 M54 Auto
E46 320i 2002 M54 Auto
E46 330i 2003 M54 Sedan Manual