DTC P0246: Turbocharger/Supercharger WASTEGATE Solenoid "A" High: Notes

WARNING: This page is about a different variant/trim than selected.

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Poor driving performance

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Refer to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>CLEAR MEMORY MODE>OPERATION , and inspection mode Refer to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>INSPECTION MODE>PROCEDURE ..
Use the check board when measuring the ECM terminal voltage and resistance.

Wiring diagram:

Engine Electrical System Refer to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM>WIRING DIAGRAM .

G11577137

Courtesy of SUBARU OF AMERICA, INC.

CHECK HARNESS BETWEEN ECM AND WASTEGATE CONTROL SOLENOID VALVE CONNECTOR.
1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Disconnect the connector from the wastegate control solenoid valve.
4. Turn the ignition switch to ON.
5. Measure the voltage between ECM connector and engine ground.
  Connector & terminal
  
  (E159) No. 11 (+) - Engine ground (-):
Is the voltage 10 V or more?

Yes: Repair short circuit to power in harness between ECM connector and wastegate control solenoid valve connector.

No: Go to 2.
CHECK WASTEGATE CONTROL SOLENOID VALVE.
1. Turn the ignition switch to OFF.
2. Measure the resistance between wastegate control solenoid valve terminals.
  Terminals
  
  No. 1 - No. 2:
Is the resistance less than 1 Ω?

Yes: Replace the wastegate control solenoid valve. Refer to FUEL INJECTION (FUEL SYSTEMS) (EXCEPT FOR STI)>WASTEGATE CONTROL SOLENOID VALVE .

No: Repair the poor contact of ECM connector.