DTC 78
WARNING: This page is about a different car, the 1998 Lexus SC 400, 1998 Lexus SC 300, 1997 Lexus SC 400, and 1997 Lexus SC 300. However, it is still accessible from the selected car via links, so may be relevant.
Abnormal signal from left rear speed sensor. Check left rear sensor rotor and sensor wire harness.