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 MANUALSSUBARU2005OUTBACK I, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - ENGINE (DIAGNOSTICS) (H4SO)DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC P0607 CONTROL MODULE PERFORMANCE

2005 Subaru Outback i, Standard

DTC P0607 Control Module Performance

2005 Subaru Outback i, StandardSECTION DTC P0607 Control Module Performance

DTC DETECTING CONDITION:

Detect as soon as malfunction occurs.
GENERAL DESCRIPTION < Ref. to DTC P0605 INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR , Diagnostic Trouble Code (DTC) Detecting Criteria.> and < Ref. to DTC P0607 CONTROL MODULE PERFORMANCE , Diagnostic Trouble Code (DTC) Detecting Criteria. >

TROUBLE SYMPTOM:

Erroneous idling
Poor driving performance

CAUTION: After repair or replacement of faulty parts, conduct Clear Memory Mode < Ref. to , OPERATION , Clear Memory Mode.> and Inspection Mode < Ref. to , PROCEDURE , Inspection Mode.>.

WIRING DIAGRAM:

Fig 1: DTC P0607 Circuit

Courtesy of SUBARU OF AMERICA, INC.

DTC P0607 DIAGNOSIS

Step

Check

Yes

1. CHECK INPUT VOLTAGE OF ECM

Turn the ignition switch to ON.
Measure the voltage between ECM connector and ground.
Connector & terminal

(B135) No. 5 (+) - Chassis ground (-): (B135) No. 6 (+) - Chassis ground (-):

Is the measured value 10 -13 V?

Go to step 2.

Repair the open circuit or ground short of power supply circuit.

2. CHECK INPUT VOLTAGE OF ECM

Start the engine.
Measure the voltage between ECM connector and ground.
Connector & terminal

(B135) No. 5 (+) - Chassis ground (-): (B135) No. 6 (+) - Chassis ground (-):

Is the measured value 13 - 15 V?

Go to step 3.

Repair the open circuit or ground short of power supply circuit.

3. CHECK GROUND HARNESS OF ECM

Measure the voltage between ECM connector and ground.

Connector & terminal

(B137) No. 1 (+) - Chassis ground (-):

(B137) No. 2 (+) - Chassis ground (-):

(B137) No. 3 (+) - Chassis ground (-):

Is the measured value less than 1 V?

Repair poor contact of ECM connector. If poor contact occur, replace the ECM.

Retighten the engine ground terminal.

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.