GE Dishwasher Error Code i10: Reed Switch Door Problem
Updated: February 2026
The GE dishwasher error code i10 (sometimes displayed as I10) signals a problem with the reed switch door sensor. This sensor uses magnetic technology to detect when the door is properly closed.
Reed Switch Technology
Unlike mechanical switches, reed switches use magnetism for door detection. A magnet mounted on the door activates the reed switch in the frame when the door closes. The reed switch contains metal contacts sealed in glass that close when the magnet is nearby. This contactless design is reliable but can fail if the magnet weakens, the switch breaks, or alignment is off.
Troubleshooting and Repair
- Step 1: Verify the door closes fully and latches properly. Reed switch errors can result from door alignment issues preventing full closure.
- Step 2: Locate the reed switch and magnet. The magnet is usually embedded in the door, while the reed switch is mounted in the dishwasher frame where the door closes.
- Step 3: Check alignment. The magnet should pass very close to the reed switch when the door closes. Gaps larger than 1/4 inch prevent activation.
- Step 4: Test the magnet strength. Hold a paper clip or small metal object near the magnet—it should attract noticeably. Weak magnets need replacement.
- Step 5: Disconnect power and remove the door panel to access the reed switch. It's typically a small cylindrical component with two wires.
- Step 6: Test the reed switch by bringing a magnet near it while measuring continuity with a multimeter. Contacts should close (show continuity) when the magnet approaches.
- Step 7: Replace the reed switch if it doesn't respond to the magnet, or replace the magnet if it's weak. Ensure proper positioning during installation.
After replacement, test door closure multiple times. The dishwasher should recognize door closure consistently without errors. The i10 error should clear once proper magnetic sensing is restored. Reed switches are reliable but sensitive to alignment—ensure the magnet path brings it very close to the switch for reliable operation.
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