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Home >> Infiniti >> 2019 >> QX60 Pure, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (11 Of 17) >> DTC/Circuit Diagnosis >> DTC P1148: Closed Loop Control >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. CHECK DTC PRIORITY 

    If DTC P1148 or P1168 is displayed with DTC for A/F sensor 1, first perform the confirmation procedure (trouble diagnosis) of DTC corresponding to A/F sensor 1.

    Is applicable DTC detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    NO

    Confirmation after repair: INSPECTION END