E102
Enphase Proximity Detection / Latch Switch Fault

Charger displays E102 and refuses to start; vehicle may briefly show 'charging' then immediately stop.

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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 proximity switch in J1772 handle, Broken proximity wire in cable harness, Contaminated or jammed latch mechanism, Faulty input on charger control board

How to Fix / Troubleshooting

Safety: Turn OFF the dedicated EV charger breaker before inspecting the connector.

  • Check the latch: On the J1772 handle, operate the latch lever several times. Ensure it moves freely and fully returns. Remove any visible debris around the latch.
  • Inspect the handle body: Look for cracks, signs of impact, or melted plastic near the latch area. Physical damage often indicates an internal proximity switch failure.
  • Test with another vehicle (if available): If E102 appears with multiple vehicles, the fault is likely in the handle/cable or charger, not the car.
  • Power cycle: Restore power at the breaker, wait for the charger to boot, and plug in again. If E102 reappears, the proximity circuit is likely defective.
  • Do not bypass safety circuits: The proximity circuit prevents drive-off under load. If the error persists, schedule service to replace the J1772 handle/cable assembly or the main control board. Do not attempt to open or rewire the handle.
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Repair Difficulty

Medium 3/5

Required Part

Enphase J1772 Handle with Proximity Switch
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