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

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Poor driving performance

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Clear Memory Mode . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Inspection Mode .
Use the check board when measuring the ECM terminal voltage and resistance.

Wiring diagram:

Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM .

Fig 1: Turbocharger/Supercharger Wastegate Solenoid A High - Wiring Diagram

G11270608

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 the wastegate control solenoid valve.
3. Disconnect the connector from ECM.
4. Turn the ignition switch to ON.
5. Measure the voltage between ECM and engine ground.
  Connector & terminal
  
  (E159) No. 11 (+) - Engine ground (-):
Is the voltage 10 V or more?
- Yes: Repair short circuit to power in the harness between ECM 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. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>Wastegate Control Solenoid Valve .
- No: Repair the poor contact of ECM connector.