what do these 3codes mean from OBD II test. P1128, P0344 and P0032

Question

I'm am wondering if these are expensive problems

Answer 1

P1128  Closed loop fueling  not achieved

P0344 Camshaft position sensor intermittent

P0033 Surge valve solenoid circuit

How expensive is this? For P0032 just replace this solenoid , this is a common failure, As for P1128 this can s fuel pressure related, or engine coolant temperature related.  which effects the 02 sensor operation, The first repair you need to do is P0344, This can be because of the timing belt,being worn, or the cam sensor itself,Do P0344 first,The worst part of P0344 is a ECM,