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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 404 (Engine Controls And Fuel - 6.2L (LT4) - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information And Procedures >> DTC P2615 or P2616 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On/Vehicle - In Service Mode
  2. Verify DTC P2615, P2616 is not set.
    • If any of the DTCs are set 
    1. Ignition/Vehicle - Off
    2. Verify the following conditions do not exist:
      • Corrosion@Electrical Connector@K20 Engine Control Module
      • Short between the circuits@Electrical Connector@K20 Engine Control Module
      • If a condition exists - Repair or replace as necessary
      • If none of the conditions exists - Replace the appropriate component: K20 Engine Control Module
    • Go to next step: If none of the DTCs are set 
  3. All OK.
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