Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range E021 Error Fix: Gas Igniter Failure — Broil

The gas igniter for the broil burner (top of oven) is not reaching sufficient temperature. Same diagnosis as E020 but for the broil circuit. Check the broil igniter for cracks (visible through the oven — the igniter should glow bright orange). Measure amperage draw. Replace if weak or failed. On dual-oven models, the upper and lower ovens have separate igniters that must be tested independently.

High severity2 fixes available✨ Free fix available

Quick Answer

Error E021 on the Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range means: Gas Igniter Failure — Broil. The top-ranked community fix is “Test and Replace Broil Igniter Assembly” (hard difficulty, ~60 min, DIY cost: $40-$60). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · oven

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 oven repairs can be done safely at home, consider hiring a qualified technician if:

This is a high severity error — continued use may cause damage or a safety hazard
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: $200-$300.

Other Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range Error Codes

E011

Oven Temperature Sensor Open

2 fixes

E012

Oven Temperature Sensor Shorted

2 fixes

E013

Oven Maximum Temperature Exceeded

2 fixes

E015

Door Lock Fault — Self-Clean

Door Lock Timeout

Gas Igniter Failure — Bake

2 fixes

E022

Gas Valve / Supply Fault

2 fixes

E030

Control Board Communication Error

2 fixes

People Also Ask About Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range Error E021

What does error code E021 mean on a Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range?

Error code E021 on the Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range means: Gas Igniter Failure — Broil. The gas igniter for the broil burner (top of oven) is not reaching sufficient temperature. Same diagnosis as E020 but for the broil circuit. Check the broil igniter for cracks (visible through the oven — the igniter should glow bright orange). Measure amperage draw. Replace if weak or failed. On dual-oven models, the upper and lower ovens have separate igniters that must be tested independently.

How do I fix error code E021 on my Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range?

The most successful fix is "Test and Replace Broil Igniter Assembly" (hard difficulty, ~60 minutes). Estimated DIY cost: $40-$60. HomeMD has 2 community-ranked fixes for this error.

Is error code E021 on a Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range serious?

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Can I fix Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range error E021 myself?

Yes — the top-ranked community fix ("Test and Replace Broil Igniter Assembly") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Clamp multimeter, Gloves.

How much does it cost to repair Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range error E021?

DIY cost: $40-$60. Professional repair typically costs $200-$300. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range have?

The Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range has 8 other known error codes, including: E011 (Oven Temperature Sensor Open), E012 (Oven Temperature Sensor Shorted), E013 (Oven Maximum Temperature Exceeded), E015 (Door Lock Fault — Self-Clean), E016 (Door Lock Timeout), and 3 more.

What other error codes does the Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range have?

The Bosch HGI8056UC 800 Series 30 in Gas Slide-In Range has 8 other known error codes:

E011 — Oven Temperature Sensor Open (2 fixes)
E012 — Oven Temperature Sensor Shorted (2 fixes)
E013 — Oven Maximum Temperature Exceeded (2 fixes)
E015 — Door Lock Fault — Self-Clean (2 fixes)
E016 — Door Lock Timeout (2 fixes)
E020 — Gas Igniter Failure — Bake (2 fixes)
E022 — Gas Valve / Supply Fault (2 fixes)
E030 — Control Board Communication Error (2 fixes)

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