2008 Subaru Outback Limited, AutomaticFACTORY OEM SERVICE PROCEDURE

Basic Diagnostic Procedure: Procedure: Engine

DIAGNOSTIC PROCEDURE CHART

Step Check Yes No
1 CHECK ENGINE START FAILURE. 
  1. Ask the customer when and how the trouble occurred using the interview check list. <Ref. to CHECK , Check List for Interview .>
  2. Start the engine.
 Does the engine start? Go to step 2.  Inspection using "Diagnostics for Engine Start Failure". <Ref. to DIAGNOSTICS FOR ENGINE STARTING FAILURE . >
2 CHECK ILLUMINATION OF MALFUNCTION INDICATOR LIGHT.  Does the malfunction indicator light illuminate? Go to step 3.  Inspection using "General Diagnostic Table". <Ref. to INSPECTION , General Diagnostic Table .>
3 CHECK INDICATION OF DTC ON DISPLAY. 
  1. Turn the ignition switch to OFF.
  2. Connect the Subaru Select Monitor or general scan tool to data link connector.
  3. Turn the ignition switch to ON.
  4. Read DTC using Subaru Select Monitor or general scan tool.
NOTE:
  • Subaru Select Monitor

    Refer to "Read Diagnostic Trouble Code" for detailed operation procedure. <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) . >

  • For detailed operation procedures, refer to the general scan tool operation manual.
 Is DTC displayed on the Subaru Select Monitor? Record the DTC. Repair the trouble cause. <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Go to step 4  . Repair the related parts.
NOTE: If DTC is not shown on display although the malfunction indicator light illuminates, perform the diagnosis of malfunction indicator light circuit or combination meter. <Ref. to MALFUNCTION INDICATOR LIGHT . >
4 PERFORM DIAGNOSIS. 
  1. Perform the Clear Memory Mode. <Ref. to CLEAR MEMORY MODE . >
  2. Perform the Inspection Mode. <Ref. to INSPECTION MODE . >
 Is DTC displayed on the Subaru Select Monitor? Inspect using "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". <Ref. to DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) . > Finish the diagnosis.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.