Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2008FORESTER F4-2.5L DOHC TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSCOMMUNICATION FOR INITIALIZING IMPOSSIBLE
2008 Subaru Forester F4-2.5L DOHC Turbo
Communication for Initializing Impossible
2008 Subaru Forester F4-2.5L DOHC TurboSECTION Communication for Initializing Impossible
COMMUNICATION FOR INITIALIZING IMPOSSIBLE
NOTE: If the AT OIL TEMP warning light turns on when the Subaru Select Monitor or general scan tool is connected, perform the following procedures.
1. Disconnect the Subaru Select Monitor or general scan tool from the vehicle.
2. Repeat the ignition switch ON-OFF cycle three times.
3. Turn the ignition switch to ON.
If the AT OIL TEMP warning light turns off, the Subaru Select Monitor or general scan tool may be faulty. Connect a different Subaru Select Monitor or general scan tool, and if AT OIL TEMP warning light remains off, delete the DTC.
DIAGNOSIS:
Defective harness connector
TROUBLE SYMPTOM:
Subaru Select Monitor communication failure
NOTE: If the AT OIL TEMP warning light turns on when the Subaru Select Monitor or general scan tool is connected, perform the following procedures.
1. Disconnect the Subaru Select Monitor or general scan tool from the vehicle.
2. Repeat the ignition switch ON-OFF cycle three times.
3. Turn the ignition switch to ON.
If the AT OIL TEMP warning light turns off, the Subaru Select Monitor or general scan tool may be faulty. Connect a different Subaru Select Monitor or general scan tool, and if AT OIL TEMP warning light remains off, delete the DTC.
DIAGNOSIS:
Defective harness connector
TROUBLE SYMPTOM:
Subaru Select Monitor communication failure
WIRING DIAGRAM:
Step 1-Step 8:
Step 9-Step 16:
Step 17-Step 20:
RENDER: 1.0x
NO RELATED
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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.