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GE Microwave 18 error code

On GE microwaves, error 18 indicates: Power watch — the electronic control detected a problem. Start with a 5-minute power reset at the breaker, then follow the microwave-specific checks below before ordering replacement parts for 18. If the code returns on two consecutive cycles after a reset, treat it as a confirmed fault — not a one-time power glitch.

Reviewed August 2025 · sources below

Safe to keep using?

Stop using

Severe overheating requires stopping use until the cause is identified.

  • • Unplug the appliance before inspection.
  • • Microwave high-voltage components can retain lethal charge even when unplugged.
  • • Do not continue using the appliance until the cause is identified.

5 product recalls may apply

Brand-level matches — verify your model.

Show

  • Samsung Over-the-Range Microwaves Recalled Due to Shock Hazard

    Nov 2009 · Confirm your model

    Notice

  • GE Recalls Ranges Due to Fire and Burn Hazards

    Apr 2009 · Confirm your model

    Notice

  • GE Recalls to Inspect and Repair Wall Ovens Due to Fire and Burn Hazards

    Nov 2008 · Confirm your model

    Notice

  • eStyle Recalls Mini Chef Toy Kitchens Due to Choking and Tip-Over Hazards

    Jun 2008 · Confirm your model

    Notice

  • General Electric Recalls Microwave Combo Wall Ovens Due to Fire Hazard

    Dec 2007 · Confirm your model

    Notice

Next step

Still seeing 18?

Show a photo or describe the symptom. Answer a few safety-first questions and see whether a part is needed.

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How to fix 18

  1. Unplug the microwave and wait at least 5 minutes — high-voltage components can hold a lethal charge even when unplugged.
  2. Reset GE 18: leave power off for 5 minutes, restore power, then restart. Confirm whether 18 returns.
  3. Check the most common cause for 18: Power watch — the electronic control detected a problem.
  4. Inspect the control pad for stuck keys, damaged membrane switches, and loose ribbon cable connections.
  5. If a reset and basic checks don't clear the code, use our lookup tool for AI-powered diagnosis or contact a qualified technician.
  6. Reassemble, restore power, and run a test cycle. If 18 returns, the faulty component likely needs replacement.

Call a pro when: Call a technician before opening the cabinet — microwave high-voltage parts can retain a lethal charge even when unplugged. Also call if you smell burning, see sparking, or the code returns after a reset.

What 18 means

Power watch — the electronic control detected a problem.

DIY Difficulty
4 /10MODERATE

DIY difficulty: 4/10 — this repair usually requires electrical testing.

Time: 30–60 minutes
Risk: Moderate
Skill: Intermediate
Tools: Screwdriver, Adjustable pliers, Multimeter, Flashlight, Work gloves
Power disconnect required

Likely causes

Most likelyUser-serviceable issue

Many codes resolve with cleaning, resetting, or reconnecting.

Check: Power-cycle the appliance and check for obvious blockages or loose connections.

Est. cost: $0–$0

PossibleFailed component

Wear or electrical failure of an internal part.

Check: If basic checks fail, the faulty component likely needs replacement.

Est. cost: $0–$100

Repair or Replace?

DIY repair

$35–$65

Professional repair

$223–$302

Comparable replacement

$723–$977

Our recommendation

REPAIR LIKELY MAKES SENSE

REPAIR LIKELY MAKES SENSE. Professional repair ($223–$302) is well below replacement cost.

Actual repair and replacement costs vary by model, location, labor rate, and condition.

Professional assistance recommended

This issue may be unsafe for DIY repair. Follow the safety guidance above and contact a qualified technician.

Repair videos

Watch repair videos on YouTube

User manuals
Start with the official support page, then use the search options if that link has moved. You’ll usually need your model number.
OfficialGE appliance manuals

Find your model number, then download manuals from GE support.

Manual librarySearch GE Microwave manuals on ManualsLib

Free scanned manuals — search results, not a guaranteed match.

Web searchSearch the web for GE Microwave user manual

Useful when manufacturer pages move or don’t list older models.

Questions about 18

What does 18 error code mean on a GE microwave?

Power watch — the electronic control detected a problem.

How do I reset GE microwave 18?

Unplug the microwave or switch it off at the breaker for 5 minutes, then restore power and restart. A reset clears a stored 18 after a glitch, but the code will return if the underlying fault is still present.

What part do I need for GE 18?

Not always — some 18 errors are caused by user-fixable issues like clogs or unbalanced loads. Try the troubleshooting steps first.

Can I fix GE error 18 myself?

Basic resets and stuck-key checks are DIY-safe. Do not open the microwave cabinet or discharge the high-voltage capacitor yourself — call a qualified technician for internal repairs.

Other GE Microwave codes

GE F1GE F2GE F3GE F4GE SEGE F5M

Prevent this problem next time

  • Follow manufacturer maintenance schedule
  • Address small issues before they worsen

Sources

Manufacturer meaning

Power watch — the electronic control detected a problem.

FixApplianceCode guidance

Start with basic checks for GE 18 before ordering parts.

Source type: Part database

Source: ModelPartFinder + FixApplianceCode editorial

Last reviewed: 2026-10-23

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