E2
Bauknecht
Door Interlock Logic Error
Microwave displays E2 and does not heat; sometimes fan and light still operate.
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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 sequence of door switch states, Shorted or welded door switch contacts, Miswired door switch harness, Faulty control board door input circuit
How to Fix / Troubleshooting
Safety first: Unplug the appliance. Door interlock repairs must be done carefully to maintain safety certification.
- Step 1 – Avoid slamming the door: Slamming can damage switches. Gently open and close the door and see if the error clears after a power reset.
- Step 2 – Power reset: Unplug for 5 minutes, reconnect, and test. If E2 returns, internal diagnosis is needed.
- Step 3 – Inspect door switches: A technician should test each door switch for proper open/closed operation and correct wiring order.
- Step 4 – Replace defective switch or harness: Install a new door switch assembly / harness if any switch is welded closed or not changing state.
- Step 5 – Control board: If switches and wiring are correct, the control board’s door input circuit may be faulty and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Door Switch Assembly
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