E18 code; unit may not recognize or control the internal light or auxiliary components.

Safety first: Unplug the ice maker before working on lighting or accessory circuits.

• Step 1 – Inspect internal light: Check the internal LED or bulb for visible damage, moisture, or corrosion at the socket.
• Step 2 – Disconnect accessory: Temporarily disconnect the light or accessory from its harness and restore power to see if E18 clears. If it does, the accessory is likely shorted.
• Step 3 – Check wiring: Inspect the accessory wiring for pinched or bare wires that could short to the cabinet.
• Step 4 – Replace accessory: Install a new GE-approved light module or accessory if the original is defective.
• Step 5 – Control board check: If E18 persists with the accessory disconnected and wiring intact, the control board output driver may be damaged and require replacement.