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Home >> Subaru >> 2018 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 4) (Except For STI) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P2004: TGV Control Stuck Open Bank 1 >> Notes
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DTC P2004: TGV Control Stuck Open Bank 1: Notes

DTC detecting condition: 

Immediately at fault recognition

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>Clear Memory Mode>OPERATION , and inspection mode Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>Inspection Mode>PROCEDURE .
  1. CHECK DTC  .

    Read the engine DTC using the Subaru Select Monitor or general scan tool. Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>Read Diagnostic Trouble Code (DTC) .

    Is DTC other than P2004 displayed? (Current malfunction)

    Yes: Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>List of Diagnostic Trouble Code (DTC) .

    No: Go to  2.

  2. CHECK TUMBLE GENERATOR VALVE RH  .
    1. Remove the tumble generator valve assembly RH.
    2. Check the tumble generator valve.

    Is there any dirt or clogging with foreign objects in the tumble generator valve?

    Yes: Clean the tumble generator valve.

    No: Replace the tumble generator valve RH. Ref. to FUEL INJECTION (FUEL SYSTEMS) (EXCEPT FOR STI)>Tumble Generator Valve Assembly .