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E302

Bosch · HII8056U 800 Series 30 in Induction Range with Home Connect

Bosch HII8056U 800 Series 30 in Induction Range with Home Connect E302 Error Fix: User Interface Board Fault

The user interface (UI) board has failed. The display may be blank, partially lit, or showing garbled information. Check the ribbon cable connection between the UI board and the main control board. Check for power at the UI board connector. If the display is completely dead but the oven otherwise operates (elements heat when the oven was running), the UI board has likely failed. Replace the user interface board assembly.

High severity2 fixes available✨ Free fix available

Quick Answer

Error E302 on the Bosch HII8056U 800 Series 30 in Induction Range with Home Connect means: User Interface Board Fault. The top-ranked community fix is “Replace User Interface Board Assembly” (hard difficulty, ~60 min, DIY cost: $100-$150). 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: $300-$450.

Other Bosch Models with Error E302

HBL5451UC 500 Series 30 in Single Wall Oven

oven · 2 fixes

HBL8451UC 800 Series 30 in Single Convection Wall Oven

oven · 2 fixes

HBL8651UC 800 Series 30 in Double Convection Wall Oven

oven · 2 fixes

HBN5451UC 500 Series 27 in Single Wall Oven

oven · 2 fixes

HBN8651UC 800 Series 30 in Single Wall Oven

oven · 2 fixes

HDI8056U 800 Series 30 in Induction Slide-In Range

oven · 2 fixes

HEI8056U 800 Series 30 in Electric Slide-In Range

oven · 2 fixes

HGI8056UC 800 Series 30 in Gas Slide-In Range

oven · 2 fixes

HSLP451UC Benchmark 30 in Steam Convection Oven

oven · 2 fixes

Other Bosch HII8056U 800 Series 30 in Induction Range with Home Connect 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

Control Board Communication Error

2 fixes

E031

Control Board Internal Fault

2 fixes

E111

Bake Element Circuit Fault

2 fixes

People Also Ask About Bosch HII8056U 800 Series 30 in Induction Range with Home Connect Error E302

What does error code E302 mean on a Bosch HII8056U 800 Series 30 in Induction Range with Home Connect?

Error code E302 on the Bosch HII8056U 800 Series 30 in Induction Range with Home Connect means: User Interface Board Fault. The user interface (UI) board has failed. The display may be blank, partially lit, or showing garbled information. Check the ribbon cable connection between the UI board and the main control board. Check for power at the UI board connector. If the display is completely dead but the oven otherwise operates (elements heat when the oven was running), the UI board has likely failed. Replace the user interface board assembly.

How do I fix error code E302 on my Bosch HII8056U 800 Series 30 in Induction Range with Home Connect?

The most successful fix is "Replace User Interface Board Assembly" (hard difficulty, ~60 minutes). Estimated DIY cost: $100-$150. HomeMD has 2 community-ranked fixes for this error.

Is error code E302 on a Bosch HII8056U 800 Series 30 in Induction Range with Home Connect serious?

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

Can I fix Bosch HII8056U 800 Series 30 in Induction Range with Home Connect error E302 myself?

Yes — the top-ranked community fix ("Replace User Interface Board Assembly") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Non-contact voltage tester, Plastic pry tool.

How much does it cost to repair Bosch HII8056U 800 Series 30 in Induction Range with Home Connect error E302?

DIY cost: $100-$150. Professional repair typically costs $300-$450. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Bosch HII8056U 800 Series 30 in Induction Range with Home Connect have?

The Bosch HII8056U 800 Series 30 in Induction Range with Home Connect 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.

Which other Bosch models have the E302 error?

Error code E302 also appears on 9 other Bosch models: HBL5451UC 500 Series 30 in Single Wall Oven, HBL8451UC 800 Series 30 in Single Convection Wall Oven, HBL8651UC 800 Series 30 in Double Convection Wall Oven, HBN5451UC 500 Series 27 in Single Wall Oven, HBN8651UC 800 Series 30 in Single Wall Oven, HDI8056U 800 Series 30 in Induction Slide-In Range, and 3 more. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Bosch HII8056U 800 Series 30 in Induction Range with Home Connect have?

The Bosch HII8056U 800 Series 30 in Induction Range with Home Connect 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)
E030 — Control Board Communication Error (2 fixes)
E031 — Control Board Internal Fault (2 fixes)
E111 — Bake Element Circuit Fault (2 fixes)

Which other Bosch models have the E302 error?

Error code E302 also appears on 9 other Bosch models:

HBL5451UC 500 Series 30 in Single Wall Oven (oven) · 2 fixes
HBL8451UC 800 Series 30 in Single Convection Wall Oven (oven) · 2 fixes
HBL8651UC 800 Series 30 in Double Convection Wall Oven (oven) · 2 fixes
HBN5451UC 500 Series 27 in Single Wall Oven (oven) · 2 fixes
HBN8651UC 800 Series 30 in Single Wall Oven (oven) · 2 fixes
HDI8056U 800 Series 30 in Induction Slide-In Range (oven) · 2 fixes
HEI8056U 800 Series 30 in Electric Slide-In Range (oven) · 2 fixes
HGI8056UC 800 Series 30 in Gas Slide-In Range (oven) · 2 fixes
HSLP451UC Benchmark 30 in Steam Convection Oven (oven) · 2 fixes

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