E05
EVgo Input Voltage Out of Range

Display shows E05; charger refuses to start or stops shortly after starting

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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

Incorrect supply voltage (e.g., 120 V on a 240 V EVgo charger), Loose line connections at breaker or charger terminals, Utility brownout or overvoltage, Faulty internal AC voltage sensing circuit

How to Fix / Troubleshooting

Safety first: Only a qualified person should measure live voltages. Turn OFF the breaker before opening any covers.

  • Confirm breaker rating: Verify the EVgo charger is on the correct double‑pole breaker size and voltage per its nameplate (commonly 240 V). A single‑pole 120 V connection will cause E05.
  • Check wiring connections: With power OFF, remove the EVgo charger’s front cover (if user‑serviceable) and inspect the line (L1, L2) and ground terminals. Tighten any loose lugs to the torque specified in the installation manual.
  • Measure supply voltage: With a multimeter and appropriate PPE, measure voltage between L1–L2 and L1/L2–ground at the charger input. Confirm it is within the specified range (typically 208–240 V). If voltage is unstable, contact your electrician or utility.
  • Power-cycle: After correcting any wiring issues, turn the breaker OFF for 2 minutes, then ON and test charging.

If E05 persists with correct and stable supply voltage, the internal voltage sensing circuit on the EVgo control board may be faulty and should be evaluated and replaced by an EVgo‑authorized technician.

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Repair Difficulty

Hard 4/5

Required Part

EVgo Main Control Board
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