GE Microwave Error Err: What It Means & How to Fix It
Quick answer: Err on a GE microwave most often points to a door sensor fault, where the interlock switches aren’t confirming the door is fully closed and latched.
“Err kept showing up and the microwave wouldn’t start at all. One of the door interlock switches had worn out — replaced and it’s been running fine since.”
Quick Answer
GE microwaves use multiple interlock switches to confirm the door is securely closed before allowing operation, a critical safety feature since a microwave shouldn’t run with the door open. Err flags when this confirmation fails.
What Does Err Mean?
Multiple interlock switches around the door frame confirm the door is fully closed and latched before the microwave will run. Err appears when one of these switches doesn’t register properly — sometimes from door misalignment, sometimes from a worn or failed switch itself.
3 Steps to Diagnose Err
Open and firmly close the door again.
Confirms whether it’s a one-time latching issue or persistent.
Check the door for visible misalignment or looseness.
A door that doesn’t sit flush against the frame may not fully engage the interlock switches.
Have the interlock switches tested if the door closes normally.
A technician can confirm which switch has failed and replace it.
Can You Fix This Yourself?
Checking that the door closes flush and isn’t visibly misaligned is a safe first step. Since interlock switches are a genuine safety feature preventing operation with the door open, testing and replacing a failed switch is best left to a technician rather than attempting to bypass it.
What Happens When You Call Star Appliance Repair
- Free service call with any completed repair — you’re never charged just to have us look
- Upfront price before any work begins, once the exact part is confirmed
- Most calls booked before noon get same-day service
- Manufacturer-approved parts, backed by our written warranty
Frequently Asked Questions
Why does my microwave show Err even though the door closes fine?
The door can appear to close normally while not fully engaging one of the interlock switches, especially if there’s slight misalignment that isn’t visually obvious.
Is it safe to use the microwave with Err showing?
No — the interlock system is a genuine safety feature, and the microwave shouldn’t be forced to run while this fault is present.
Can I bypass the interlock switches myself?
This isn’t something to attempt — interlock switches prevent microwave radiation exposure with the door open, and bypassing them isn’t safe.
How quickly can this be repaired?
Interlock switch replacement is typically a same-visit repair once the specific failed switch is identified.
*Same-day service is offered whenever possible and depends on technician availability, parts, and your location within the GTA.