E15
EVgo Internal Power Supply Fault (Low‑Voltage Rail Error)

Display shows E15; charger may intermittently stop charging without user input

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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

Failed internal AC‑DC auxiliary power supply, Loose low‑voltage connectors, Overheating of control board, Surge damage to DC‑DC converter

How to Fix / Troubleshooting

Safety first: Turn OFF the breaker before opening the charger. Internal capacitors may hold charge; only qualified persons should service internal power supplies.

  • Power reset: Turn OFF the breaker for 5 minutes, then ON. Observe if E15 returns quickly.
  • Ventilation check: Ensure vents are clear and the charger is not installed in a confined, overheated space.
  • Internal inspection (technician): With power OFF, a technician can inspect the auxiliary power supply module for bulging capacitors, burn marks, or loose connectors.

Persistent E15 requires replacement of the EVgo auxiliary power supply module or main control board by an authorized technician.

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Repair Difficulty

Professional Required 5/5

Required Part

EVgo Auxiliary Power Supply Module
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