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Home >> Infiniti >> 2019 >> Q70L 3.7 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (3.7L) (DTC/Circuit Diagnosis) (1 Of 9) >> DTC/Circuit Diagnosis >> DTC U0122: Vehicle Dynamics Control Module >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

U0122

VDC MDL

(Lost communication with vehicle dynamics control module)

When ECM is not transmitting or receiving CAN communication signal of OBD (emission related diagnosis) with ABS actuator and electric unit (control unit) for 2 seconds or more.

CAN communication line between ECM and ABS actuator and electric unit (control unit)

(CAN communication line is open or shorted)
  1. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch ON and wait at least 3 seconds.
    2. Check DTC.

    Is DTC detected?

    YES

    Refer to Diagnosis Procedure .

    NO

    INSPECTION END

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