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Home >> Buick >> 2012 >> Regal GS, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 155 (Data Communication System) >> Diagnostic Information and Procedures >> DTC C056E >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify DTC C056E is not set.
    • If DTC C056E is set 
    1. Program the device that set the DTC.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the device that set the DTC.
      • If the DTC does not set
    3. All OK.
    • If DTC C056E is not set 
  3. All OK
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