DTC C1281: Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC): Wiring Diagram
WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
Refer to DTCs C1425 and C1429. Refer to WIRING DIAGRAM , or refer to WIRING DIAGRAM ).