2009 Volkswagen Jetta TDI diesel 2.0L

I have 2009 Volkswagen Jetta TDI diesel 2.0L, they saying this car required CAN bus system instead kwp2000.

My question is:

How does the protocol Id change? Maybe ECU is defective? Some people told me that OBD2 talking with different module from ECU.

from the car:

• Protocol: KWPS8FE9 ( should be CAN )
• ECU Address(es): 1A
• CAL ID(Calibration ID): 02F300050D 1402 ( they say wrong CAL ID )
• CAL CVN(Calibration Verification Number): 21DB ( they say wrong CAL CVN )

If you look at those monitors not supported.

OBDII Readiness Monitor Details:

• Misfire Monitor Supported: N
• Fuel System Monitoring Supported: N
• Component Monitor Supported: Y
• Catalyst Monitor Supported: N
• Heated Catalyst Supported: N
• EVAP System Supported: N
• Miss Monitor Ready: NS
• Fuel System Monitor Ready: NS
• Component Monitor Ready: NS
• Catalyst Monitor Ready: NS
• Heated Catalyst Monitor Ready: NS
• EVAP Monitor Ready: NS

How is it possible ECU unit created not belong to this vehicle CAL ID (Calibration ID): 02F300050D 1402 and CAL CVN (Calibration Verification Number): 21DB ?

I went to VW dealer couple of time and system profile saying engine/powertrain computer/ module checked was done by dealer.

Could it miscommunicate protocol KWP instead of CAN protocol ?