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HOMESERVICE MANUALSSUBARU2022IMPREZA BASE, 4D SEDAN, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 29 (ENGINE CONTROL SYSTEM (HEV) (DIAGNOSTICS) (3 OF 4))DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC P2004: TGV CONTROL STUCK OPEN BANK 1NOTES
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans

DTC P2004: TGV Control Stuck Open Bank 1: Notes

2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION Notes
WARNING: This page is about a different car, the 2022 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
  1. - 

    DTC detecting condition: 

    Immediately at fault recognition

    NOTE:

    After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to  ENGINE (DIAGNOSTICS) (H4DO(HEV))>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE  . 

  1. CHECK DTC  .

    Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to COMMON (DIAG)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC other than P2004 displayed? (Current malfunction)

    Yes:  Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DO(HEV))>DIAGNOSTIC TROUBLE CODE (DTC) .

    No:  Go to  2.

  2. CHECK TUMBLE GENERATOR VALVE RH  .
    1. Remove the intake manifold assembly. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO(HEV))>INTAKE MANIFOLD ASSEMBLY>REMOVAL .
    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) (H4DO(HEV))>TUMBLE GENERATOR VALVE .

    NOTE:

    The tumble generator valve cannot be disassembled. 

RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • 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.