Hyundai i20 engine codes p0365, p0366 and p0017

My OBD reader is showing following;

============1==============
P0365
Raw code: 0365
ECU: Engine control unit
Status: Confirmed
OBDII: Camshaft position (CMP) sensor B, bank 1 - circuit malfunction

============2==============
P0366
Raw code: 0366
ECU: Engine control unit
Status: Confirmed
OBDII: Camshaft position (CMP) sensor B, bank 1 - circuit range/performance

============3==============
P0017
Raw code: 0017
ECU: Engine control unit
Status: Pending
OBDII: Crankshaft position/camshaft position, bank 1 sensor B - correlation
============4==============
P0365
Raw code: 0365
ECU: Engine control unit
Status: Validated and stored in non volatile memory, Validated fault has been present during this drive cycle
OBDII: Camshaft position (CMP) sensor B, bank 1 - circuit malfunction

============5==============
P0366
Raw code: 0366
ECU: Engine control unit
Status: Validated and stored in non volatile memory, Validated fault has been present during this drive cycle
OBDII: Camshaft position (CMP) sensor B, bank 1 - circuit range/performance

============6==============
P0017
Raw code: 0017
ECU: Engine control unit
Status: Validated fault present at time of request
OBDII: Crankshaft position/camshaft position, bank 1 sensor B - correlation

It seems they all relate to "Crankshaft position/camshaft position, bank 1 sensor B " according to user groups there are 2 x camshaft position sensors.
The local dealer, Turners Hyundai won't tell me from the code description which sensor it is I need to replace, without going to them for a diagnostic !

I would like to know if its the top (rear of engine) sensor or lower (front of engine) sensor.

Thanks