LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2016 >> ELR >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls And Fuel - 1.4L (LUU) - DTC P0449 To DTC 2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P06E4 (ECM): Control Module Wake-Up Circuit Performance >> Circuit/System Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Verification

  1. Vehicle in Service Mode.
  2. Verify which module set this DTC using the scan tool vehicle wide DTC check.
    • If DTC set in the Hybrid/EV Powertrain Control Module 2 only 

      Refer to P06E4 in Data Communications

    • If DTC set in the ECM only 

      Replace the K20 Engine Control Module then perform repair verification.

    • If the DTC sets in both modules 

      Diagnose the K114B Hybrid/EV Powertrain Control Module 2 first.

  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
scientia non olet · About LEMON Manuals