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Home >> Infiniti >> 2021 >> Q60 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 7) >> Engine (ECM) >> DTC P0018: Intake Valve Timing Control >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK TIMING CHAIN INSTALLATION 

    Check service records for any recent repairs that may cause timing chain misaligned.

    Are there any service records that may cause timing chain misaligned?

    YES

    Check timing chain installation. Refer to TIMING CHAIN : Exploded View .

    NO

    GO TO 2.

  2. CHECK CAMSHAFT SPROCKET AND TIMING CHAIN 

    Check the following.

    1. Visually check for chipping camshaft sprocket gear tooth.
    2. Timing chain tension and elongation.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Repair or replace error-detected parts.