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Home >> Buick >> 2017 >> Cascada Base >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC C056D >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify DTC C056D is not set.
    • If DTC C056D is set 

      Replace the device that sets the DTC.

    • Go to next step: If DTC C056D is not set 
  3. All OK
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