Bosch
Electric Wall Oven

Model #HBN5420UC/02 Bosch electric built-in oven

Here are the repair parts and diagrams for your Bosch HBN5420UC-02 electric built-in oven. 

The diagram(s) below can help you find the right part.  If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.

On this page, you can also find any manuals, installation guides and error code tables associated with this model.

For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

Showing 10 of 89 parts

Wall Oven Temperature Sensor

#306

Inner parts Diagram

$46.76

In Stock

Wall Oven Wire Harness

#253

Latch asy Diagram

Wall oven wire harness

Part #00663791

$33.29

In Stock

Wall Oven Convection Fan Motor

#302

Inner parts Diagram

$120.61

In Stock

Wall Oven Power Supply Board

#203

Latch asy Diagram

$101.32

In Stock

Ring

#103

Control panel Diagram

Ring

Part #00423808

$12.17

In Stock

Bracket

#207

Latch asy Diagram

Bracket

Part #00608076

$27.18

In Stock

Adhesive

#450

Door Diagram

Adhesive

Part #00423241

$23.55

In Stock

Harness

#256

Latch asy Diagram

Harness

Part #00663793

$38.42

In Stock

Wall Oven Wire Harness

#254

Latch asy Diagram

Wall oven wire harness

Part #00663792

$20.19

In Stock

Washer

#317

Inner parts Diagram

Washer

Part #00605039
This item is not returnable

$2.29

In Stock

Symptoms common to all wall oven

Choose a symptom to see related wall oven repairs.

Main causes: broken broil element, faulty broil burner igniter, control system failure
Main causes: lack of gas supply, broken igniter, tripped circuit breaker, broken oven element, tripped thermal fuse, control system failure
Main causes: lack of electrical power, bad electronic control board, faulty oven control thermostat
Main causes: bad oven door lock assembly, faulty electronic control board, wiring failure
Main causes: faulty oven temperature sensor, control system problem, weak burner igniter, damaged oven element
Main causes: broken bake element, bad bake burner igniter, tripped thermal switch, control system failure

Repair guides common to all wall oven

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

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.

Repair difficulty
Time required
 45 minutes or less
June 1, 2015
By Lyle Weischwill
How to replace a wall oven control thermostat

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

Repair difficulty
Time required
 60 minutes or less
June 1, 2015
By Lyle Weischwill
How to replace wall oven door hinges

If your oven door flops open fast, it's time to replace the hinges. Follow these step-by-step instructions to do it yourself.

Repair difficulty
Time required
 30 minutes or less

Articles and videos common to all wall oven

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

October 26, 2016

How to repair broken or damaged wires video

By Sears PartsDirect staff

Learn how to repair broken, frayed or damaged wires in your appliances.

September 28, 2016

Wall oven won't heat: troubleshooting thermal switch problems video

By Sears PartsDirect staff

Learn what to do if your Kenmore, Frigidaire or Electrolux wall oven won’t heat up after running a self-cleaning cycle.

September 22, 2016

Easy party appetizer recipe video

By Sears PartsDirect staff

Make your next get-together a hit with these 3 great-tasting party appetizer recipes.