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HOMESERVICE MANUALSCHEVROLET2025EQUINOX EV RS, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCHARGING SYSTEMSPLUG-IN CHARGINGDIAGNOSTIC INFORMATION AND PROCEDURESDTC U2DBC - U2DBECIRCUIT/SYSTEM VERIFICATION
2025 Chevrolet Equinox EV RS, AWD

Circuit/System Verification

2025 Chevrolet Equinox EV RS, AWDSECTION Circuit/System Verification
    WARNING:

    If DTCs U2DBC-U2BDE are present the Battery Charger Coupler and Charge Port Housing may have sustained arc flash high voltage terminal damage. Arcing may result on molten metal splattering and arc flash hazards. To avoid the risk of personal injury or death and/or high voltage component damage, never attempt to charge the vehicle when coupler terminal damage is present. Always replace the Battery Charger Coupler whenever high voltage terminal damage is observed before any other repairs are performed.

  1. Verify DTC U2DBC, U2DBD, or U2DBE is not set
    • If DTC U2DBE is set 
  2. Replace the component: X98 Battery Charger Coupler & Perform the configuration/reset function:
    • Charge Port Temperature Rate Of Charge Too High - Level 2 Reset
    • If DTC U2DBC or U2DBD is set & DTC U2DBE = Not set 
  3. Verify a condition does not exist with the component: X98 Battery Charger Coupler
    GM4568249Courtesy of GENERAL MOTORS COMPANY
    GM6289568Courtesy of GENERAL MOTORS COMPANY
    GM6289556Courtesy of GENERAL MOTORS COMPANY
    • Melted/missing DC Charging Terminals
    • Scorched/burnt plastic or paint on or around A110 Charge Port Housing
    • Visible Damage
    • If a condition exists - Repair or replace as necessary
    • Go to next step: If no condition exists
    4. NOTE:

    Attempting to DC Fast Charge with undiagnosed damage to the DC charge port terminals could result in an arc flash or fire

  4. If all conditions test normalPerform the scan tool configuration/reset function: Charge Port Temperature Rate Of Charge Too High - Level 2 Reset & Attempt DC Charging
    • If only DTC U2DBC is set 
  5. Refer to: Plug-In Charging Malfunction (DC Charging) (K2O/K28) , or Plug-In Charging Malfunction (AC Charging) (K2O/K28) , or Plug-In Charging Malfunction (DC Charging) (K2W) , or Plug-In Charging Malfunction (AC Charging) (K2W) 
    • Go to next step: If none of the DTCs are set 
  6. 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.

    Verify that no DTCs are set.

    • If any of the DTCs are set 

      Repeat the procedure starting at step 1

    • Go to next step: If none of the DTCs are set 
  7. All OK.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.