2000 Subaru Outback Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Retrieving Diagnostic Trouble Codes

NOTE: If ABS warning light malfunction occurs, perform appropriate test under TROUBLE SHOOTING .
  1. Locate ABS diagnostic connector. See Figure. Turn ignition off. Connect one diagnostic terminal to terminal No. 8 of DLC. Turn ignition on. Determine Diagnostic Trouble Code (DTC) by counting number of times ABS warning light flashes. Up to 3 codes can be stored at a time, with the most recent code displayed first.
  2. ABS warning light first flashes DTC 11, which is the start code. DTCs will then be flashed. After codes are flashed, DTC 11 will again be displayed and codes repeated. If there is no DTCs in memory, only DTC 11 will exist. See ABS DIAGNOSTIC TROUBLE CODE INDEX  table. Perform appropriate test under DIAGNOSTIC TESTS .
ABS DIAGNOSTIC TROUBLE CODE INDEX

DTC Fault TEST No.
11 Start Code None
21 Right Front Sensor (Open) 1 
22 Right Front Sensor (Short) 2 
23 Left Front Sensor (Open) 1 
24 Left Front Sensor (Short) 2 
25 Right Rear Sensor (Open) 1 
26 Right Rear Sensor (Short) 2 
27 Left Rear Sensor (Open) 1 
28 Left Rear Sensor (Short) 2 
29 Wheel Speed Sensor Signal Problem 3 
31 Right Front Inlet Solenoid Valve 4 
32 Right Front Outlet Solenoid Valve 5 
33 Left Front Inlet Solenoid Valve 4 
34 Left Front Outlet Solenoid Valve 5 
35 Right Rear Inlet Solenoid Valve 4 
36 Right Front Outlet Solenoid Valve 5 
37 Left Rear Inlet Solenoid Valve 4 
38 Left Rear Outlet Solenoid Valve 5 
41 ABS Control Module Problem 6 
42 Low/High Supply Voltage 7 
44 A/T Control Problem 8 
51 Valve Relay Problem 9 
52 Motor &/Or Motor Relay 10 
54 Stoplight Switch Problem 11 
56 "G" Sensor Output Voltage Problem 12 
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.