front right wheel speed sensor circuit open.
front left wheel speed sensor circuit open.
rear right wheel speed sensor circuit open.
rear left wheel speed sensor circuit open.
wheel speed sensor output signal defective.
ECU supply voltage too high or too low.
front right wheel speed sensor circuit short.
front left wheel speed sensor circuit short.
rear right wheel speed sensor circuit short.
rear left wheel speed sensor circuit short.
speed signal defective.
front right - front left fuel cut solenoid malfunction.
front left - rear right fuel cut solenoid malfunction.
front right - rear left fuel supply solenoid malfunction.
front left - rear right fuel supply solenoid malfunction.
stop lamp switch malfunction.
front right oil inlet valve malfunction.
front left oil inlet valve malfunction.
rear right oil inlet valve malfunction.
rear left oil inlet valve malfunction.
front right oil return valve malfunction.
front left oil return valve malfunction.
rear right oil return valve malfunction.
rear left oil return valve malfunction.
valve relay malfunction.
motor relay malfunction.
ABS control module malfunction.