DTC P1211: Traction Control System Control Unit: Description
WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
The malfunction information related to the Traction Control System (TCS) is transferred through the CAN communication line from VDC/TCS/ABS control unit to the ECM. Be sure to erase the malfunction information such as DTC not only for VDC/TCS/ABS control unit but also for ECM after any TCS-related repair.