DTC P1211: TCS Control Unit: Description
WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
The malfunction information related to TCS is transferred through the CAN communication line from VDC/TCS/ABS control unit to ECM.
Be sure to erase the malfunction information such as DTC not only for VDC/TCS/ABS control unit but also for ECM after TCS related repair.