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Bosch
Electric Wall Oven

Model # HBL445AUC Official Bosch wall oven

Here are the diagrams and repair parts for Official Bosch HBL445AUC wall oven, as well as links to manuals and error code tables, if available.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual
Error Codes

Model diagram and schematic

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Showing 10 of 138 parts  |
Oven Bulb 420228
#420228

Cavity diagram

Oven bulb

Part #420228

Replaced by #00189351

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Manufacturer substitution
This part replaces 420228. Substitute parts can look different from the original.
$25.79 | 
19% OFF Phone Price : $31.79
In Stock
Locking 490368
#490368

Internal top panel diagram

Locking

Part #490368

The manufacturer no longer makes this part, and there's no substitute part

Oven Element 435178
#435178

Cavity diagram

Oven element

Part #435178

The manufacturer no longer makes this part, and there's no substitute part

Oven Element 420225
#420225

Cavity diagram

Oven element

Part #420225

The manufacturer no longer makes this part, and there's no substitute part

Oven Knob 418435
#418435

Fascia panel diagram

Oven knob

Part #418435

The manufacturer no longer makes this part, and there's no substitute part

Drive Hinge 143619
#143619

Body diagram

Drive hinge

Part #143619

The manufacturer no longer makes this part, and there's no substitute part

Insulation 434053
#434053

Body diagram

Insulation

Part #434053

The manufacturer no longer makes this part, and there's no substitute part

Oven Door 420250
#420250

Door diagram

Oven door

Part #420250

The manufacturer no longer makes this part, and there's no substitute part

Screw 420190
#420190

Body diagram

Screw

Part #420190

The manufacturer no longer makes this part, and there's no substitute part

Reflector 239405
#239405

Door diagram

Reflector

Part #239405

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your wall oven

Choose a symptom to see related wall oven repairs.

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Why won't my wall oven door unlock?

Main causes: bad oven door lock assembly, faulty electronic control board, wiring failure…

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Why won't my wall oven broil?

Main causes: broken broil element, faulty broil burner igniter, control system failure…

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Why won't my wall oven bake?

Main causes: broken bake element, bad bake burner igniter, tripped thermal switch, control system failure…

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Why isn't my wall oven at the temperature I set?

Main causes: faulty oven temperature sensor, control system problem, weak burner igniter, damaged oven element…

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Why doesn't my wall oven work?

Main causes: lack of electrical power, bad electronic control board, faulty oven control thermostat…

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Why won't my wall oven heat?

Main causes: lack of gas supply, broken igniter, tripped circuit breaker, broken oven element, tripped thermal fuse, con…

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Most common repair guides to help fix your wall oven

These step-by-step repair guides will help you safely fix what’s broken on your wall oven.

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How to replace a wall oven door outer glass panel

How to replace a wall oven door outer glass panel

Learn how to replace a damaged outer window panel on your wall oven door with these step-by-step instructions. …

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Repair difficulty
Time required
 45 minutes or less
How to replace a wall oven control thermostat

How to replace a wall oven control thermostat

Get your oven temperature under your control by replacing a faulty oven control thermostat.…

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Repair difficulty
Time required
 60 minutes or less
How to replace a wall oven thermal fuse

How to replace a wall oven thermal fuse

The thermal fuse trips to prevent the over from excessively overheating. The oven won't heat again until you replace the…

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Repair difficulty
Time required
 60 minutes or less

Effective articles & videos to help repair your wall oven

Use the advice and tips in these articles and videos to get the most out of your wall oven.

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5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

Get tips on completing essential holiday cleaning tasks to brighten your home.…

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

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