Kenmore 721.80373 Elite Over-the-Range Microwave WAVEGUIDE SCORCHED Error Fix: Waveguide Cover Scorched

Arcing or sparking inside microwave near the waveguide cover (cardboard/mica cover on side wall). Cover is scorched or burnt from food splatter. Replace the waveguide cover — inexpensive part. Clean interior of food residue.

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error WAVEGUIDE SCORCHED on the Kenmore 721.80373 Elite Over-the-Range Microwave means: Waveguide Cover Scorched. The top-ranked community fix is “Replace the Waveguide Cover” (medium difficulty, ~30 min, DIY cost: $10-$15). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · microwave

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many microwave repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $100-$140.

Other Kenmore 721.80373 Elite Over-the-Range Microwave Error Codes

Door Switch Failure

Oven Sensor Open

Oven Sensor Shorted

Touch Pad / Keypad Shorted

2 fixes

F-4

Humidity Sensor Fault

2 fixes

F-5

Control Board Error

2 fixes

Inverter or Magnetron Error

2 fixes

TURNTABLE STUCK

Turntable Motor Failure

2 fixes

People Also Ask About Kenmore 721.80373 Elite Over-the-Range Microwave Error WAVEGUIDE SCORCHED

What does error code WAVEGUIDE SCORCHED mean on a Kenmore 721.80373 Elite Over-the-Range Microwave?

Error code WAVEGUIDE SCORCHED on the Kenmore 721.80373 Elite Over-the-Range Microwave means: Waveguide Cover Scorched. Arcing or sparking inside microwave near the waveguide cover (cardboard/mica cover on side wall). Cover is scorched or burnt from food splatter. Replace the waveguide cover — inexpensive part. Clean interior of food residue.

How do I fix error code WAVEGUIDE SCORCHED on my Kenmore 721.80373 Elite Over-the-Range Microwave?

The most successful fix is "Replace the Waveguide Cover" (medium difficulty, ~30 minutes). Estimated DIY cost: $10-$15. HomeMD has 2 community-ranked fixes for this error.

Is error code WAVEGUIDE SCORCHED on a Kenmore 721.80373 Elite Over-the-Range Microwave serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix Kenmore 721.80373 Elite Over-the-Range Microwave error WAVEGUIDE SCORCHED myself?

Yes — the top-ranked community fix ("Replace the Waveguide Cover") is rated medium difficulty and takes about 30 minutes. Tools needed: Phillips screwdriver, Plastic spudger.

How much does it cost to repair Kenmore 721.80373 Elite Over-the-Range Microwave error WAVEGUIDE SCORCHED?

DIY cost: $10-$15. Professional repair typically costs $100-$140. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Kenmore 721.80373 Elite Over-the-Range Microwave have?

The Kenmore 721.80373 Elite Over-the-Range Microwave has 8 other known error codes, including: DOOR SWITCH FAIL (Door Switch Failure), F-1 (Oven Sensor Open), F-2 (Oven Sensor Shorted), F-3 (Touch Pad / Keypad Shorted), F-4 (Humidity Sensor Fault), and 3 more.

What other error codes does the Kenmore 721.80373 Elite Over-the-Range Microwave have?

The Kenmore 721.80373 Elite Over-the-Range Microwave has 8 other known error codes:

DOOR SWITCH FAIL — Door Switch Failure (2 fixes)
F-1 — Oven Sensor Open (2 fixes)
F-2 — Oven Sensor Shorted (2 fixes)
F-3 — Touch Pad / Keypad Shorted (2 fixes)
F-4 — Humidity Sensor Fault (2 fixes)
F-5 — Control Board Error (2 fixes)
SE — Inverter or Magnetron Error (2 fixes)
TURNTABLE STUCK — Turntable Motor Failure (2 fixes)

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