Cadillac Intermittent Charging Interruption

Charger starts charging but stops after a few minutes; no error code is displayed, or only a generic ‘Charging Stopped’ message appears.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Loose connection at input terminals causing voltage dips, Overheating of internal components triggering thermal protection, Marginal contact in J1772 pins, Vehicle onboard charger derating due to temperature

How to Fix / Troubleshooting

Safety first: Turn OFF the breaker before touching the charger enclosure or cable if you suspect overheating.

Steps to try:

  • Check for heat: After a stop event, carefully feel the outside of the charger and the cable. Warm is normal; very hot indicates a problem.
  • Inspect connector fit: Ensure the J1772 connector is fully inserted and latched into the vehicle inlet.
  • Try lower current: If your charger or app allows, temporarily reduce the maximum current (e.g., from 40 A to 24 A) and see if charging becomes stable.
  • Test another circuit load: Turn off large appliances temporarily to see if charging stability improves, which may indicate supply issues.

When to call a technician: Persistent unexplained stops require an electrician or EVSE technician to check input connections, internal terminations, and thermal sensors, and to tighten or replace components as needed.

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Repair Difficulty

Hard 4/5

Required Part

Cadillac EVSE Input Lugs / Internal Power Bus and Thermal Sensors
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