Subaru Legacy 2004 Service Manual page 3009

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ABS (DIAGNOSTICS)
12.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC C0101 ABS WHEEL SPEED SENSOR RR MALFUNCTION (BROKEN
WIRE, INPUT VOLTAGE TOO HIGH)
NOTE:
For the diagnostic procedure, refer to DTC C0104. <Ref. to ABS(diag)-43, DTC C0104 ABS WHEEL SPEED
SENSOR FL MALFUNCTION (BROKEN WIRE, INPUT VOLTAGE TOO HIGH), Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
B: DTC C0102 ABS WHEEL SPEED SENSOR RL MALFUNCTION (BROKEN
WIRE, INPUT VOLTAGE TOO HIGH)
NOTE:
For the diagnostic procedure, refer to DTC C0104. <Ref. to ABS(diag)-43, DTC C0104 ABS WHEEL SPEED
SENSOR FL MALFUNCTION (BROKEN WIRE, INPUT VOLTAGE TOO HIGH), Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
C: DTC C0103 ABS WHEEL SPEED SENSOR FR MALFUNCTION (BROKEN
WIRE, INPUT VOLTAGE TOO HIGH)
NOTE:
For the diagnostic procedure, refer to DTC C0104. <Ref. to ABS(diag)-43, DTC C0104 ABS WHEEL SPEED
SENSOR FL MALFUNCTION (BROKEN WIRE, INPUT VOLTAGE TOO HIGH), Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>
ABS(diag)-42