E11
General Motors Pilot Duty Cycle / Current Limit Mismatch

Charger shows E11; vehicle may begin charging briefly then stop with an error.

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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 pilot signal generation on GM control board, Faulty pilot resistor network in J1772 connector, Misconfigured maximum current setting, Damaged pilot wire in cable

How to Fix / Troubleshooting

Safety first: Turn OFF the breaker before inspecting the connector or cable.

Steps:

  • Verify current setting: Using the GM app or internal DIP switches (per GM installation manual), confirm the charger’s maximum current is set correctly for the circuit.
  • Inspect connector: Look for damage or corrosion on the small pilot pin in the J1772 handle. Clean gently with a dry brush.
  • Test with another GM EV: If the second vehicle shows the same behavior, the issue is likely in the charger’s pilot circuit.

If E11 continues after configuration is verified, the pilot signal circuitry (resistors or driver on the GM control board) may be defective. Replacement of the cable assembly or main board by a qualified technician is required.

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Repair Difficulty

Hard 4/5

Required Part

GM Pilot Signal Circuit / J1772 Connector Assembly
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