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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 6) >> Engine (ECM) >> DTC P0088: FRP Control System >> DTC Diagnosis Procedure >> VR30DDTT engine

VR30DDTT engine

  1. CHECK DTC PRIORITY 

    If DTC P0088 is displayed with DTC P0090, first perform the confirmation procedure (trouble diagnosis) for DTC P0090.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to Confirmation Procedure .

    NO

    GO TO 2.

  2. CHECK LOW FUEL PRESSURE 

    Check low fuel pressure. Refer to Work Procedure .

    Is inspection result normal?

    YES

    GO TO 3.

    NO

    Check low fuel pressure system. Refer to Diagnosis Procedure .

  3. CHECK HIGH PRESSURE FUEL PUMP 

    Check high pressure fuel pump. Refer to Component Inspection .

    Is inspection result normal?

    YES

    GO TO 4.

    NO

    Replace error-detected parts.

  4. CHECK FUEL LEAKAGE 
    1. Start the engine.
    2. Visually check that the fuel pump, fuel rail, and fuel piping have no fuel leakage.

    Is inspection result normal?

    YES

    Check that the fuel system has no breakage, bend, and crush. Refer to FUEL SYSTEM : Inspection .

    NO

    Replace or replace the error-detected parts.

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