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Bosch · HMC80252UC 800 Series 30 in Speed Microwave Oven

Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven SE Error Fix: Sensor Error — Humidity Sensor

The humidity sensor detected an abnormal reading during a sensor cook cycle. This may be a temporary condition. Ensure the microwave interior is clean and dry before starting a sensor cook cycle. Do not open the door during a sensor cook cycle — this disrupts the humidity reading. If persistent, the humidity sensor may need replacement. On some models, "SE" is functionally equivalent to E2. Try using manual cook mode (time and power) as a workaround.

Low severity2 fixes available✨ Free fix available
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Quick Answer

Error SE on the Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven means: Sensor Error — Humidity Sensor. The top-ranked community fix is “Test and Replace Humidity Sensor” (medium difficulty, ~45 min, DIY cost: $30-$50). 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: $150-$220.

Other Bosch Models with Error SE

HMB50152UC 500 Series 30 in Built-In Microwave

microwave · 2 fixes

HMC80152UC 800 Series 30 in Convection Speed Microwave

microwave · 2 fixes

HMD8451UC 800 Series 24 in Drawer Microwave

microwave · 2 fixes

HMV3053U 300 Series 30 in Over-the-Range Microwave

microwave · 2 fixes

HMV5053U 500 Series 30 in Over-the-Range Microwave

microwave · 2 fixes

Other Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven Error Codes

E1

Magnetron Failure — Not Heating

2 fixes
E2

Humidity / Steam Sensor Failure

2 fixes
E3

Temperature Sensor / Thermostat Error

2 fixes
E4

Door Switch / Interlock Failure

2 fixes
E5

Control Panel / Touchpad Error

2 fixes

People Also Ask About Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven Error SE

What does error code SE mean on a Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven?
Error code SE on the Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven means: Sensor Error — Humidity Sensor. The humidity sensor detected an abnormal reading during a sensor cook cycle. This may be a temporary condition. Ensure the microwave interior is clean and dry before starting a sensor cook cycle. Do not open the door during a sensor cook cycle — this disrupts the humidity reading. If persistent, the humidity sensor may need replacement. On some models, "SE" is functionally equivalent to E2. Try using manual cook mode (time and power) as a workaround.
How do I fix error code SE on my Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven?
The most successful fix is "Test and Replace Humidity Sensor" (medium difficulty, ~45 minutes). Estimated DIY cost: $30-$50. HomeMD has 2 community-ranked fixes for this error.
Is error code SE on a Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven serious?
This error is rated low severity. It is generally not urgent and can often be resolved with a simple DIY fix.
Can I fix Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven error SE myself?
Yes — the top-ranked community fix ("Test and Replace Humidity Sensor") is rated medium difficulty and takes about 45 minutes. Tools needed: T15 Torx screwdriver, Multimeter.
How much does it cost to repair Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven error SE?
DIY cost: $30-$50. Professional repair typically costs $150-$220. Many homeowners save money by trying the top-ranked community fix first.
What other error codes does the Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven have?
The Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven has 5 other known error codes, including: E1 (Magnetron Failure — Not Heating), E2 (Humidity / Steam Sensor Failure), E3 (Temperature Sensor / Thermostat Error), E4 (Door Switch / Interlock Failure), E5 (Control Panel / Touchpad Error).
Which other Bosch models have the SE error?
Error code SE also appears on 5 other Bosch models: HMB50152UC 500 Series 30 in Built-In Microwave, HMC80152UC 800 Series 30 in Convection Speed Microwave, HMD8451UC 800 Series 24 in Drawer Microwave, HMV3053U 300 Series 30 in Over-the-Range Microwave, HMV5053U 500 Series 30 in Over-the-Range Microwave. The fix may vary by model, so check each model's specific page for tailored repair steps.
What other error codes does the Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven have?

The Bosch HMC80252UC 800 Series 30 in Speed Microwave Oven has 5 other known error codes:

Which other Bosch models have the SE error?

Error code SE also appears on 5 other Bosch models:

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