- Appliances
- Ovens
E302
Bosch E302 on oven: electronics overheated
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
Your Bosch range shows E302 because the electronics have overheated: the control panel or the power board. Let it cool, check the room temperature and where the pots are, and switch the appliance off at the circuit breaker for five minutes.
Safety first
Stop and check this first
- With repeated e302 or E302, do not open the range to look at the electronics: they run on mains voltage and may be hot. Inspection belongs to Bosch service.
Safe checks you can perform
- Exact form of the code
- Room temperature and pot position
- Circuit breaker reset
Leave these tasks to a qualified professional
- Do not attempt this professional task: Overheated electronics diagnosis
- Do not attempt this professional task: Function test under load
What a technician must be able to justify
A technician is coming
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Overheated electronics diagnosis
What they doBosch service checks the power board or control panel and its cooling with the appliance de-energized.
They must show youwhich part overheated and why.
In writingthe check, the replaced part with its reference and the final function test.
Function test under load
What they doThe technician runs the oven and zones in normal use after the repair to confirm the code does not return.
They must show youthe appliance running with no code.
In writingthe test duration and result.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Checks and evidence, step by step
Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
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Exact form of the code
No special tools
Procedure
- Who:
- you.
- How:
- check whether the display shows e302 with a lowercase e or E302 in capitals and take a photo.
- Result that matters:
- knowing which part of the electronics is warning.
- If it is e302 (power board):
- switch the appliance off and contact Bosch service, as Bosch instructs.
- If it is E302 (control panel):
- continue with the next checks.
- Evidence to keep:
- the photo of the code exactly as shown.
Evidence: Bosch Freestanding Range Error Codes
- 2
Room temperature and pot position
No special tools
Procedure
- Who:
- you.
- How:
- check whether the kitchen is very hot and move any pots away from the control panel; let the appliance cool down, as Bosch instructs.
- Result that matters:
- whether the code clears once it cools.
- If it clears:
- heat on the panel was the likely cause; avoid leaving hot pots next to the controls.
- If it stays with the appliance cold:
- move on to the circuit breaker reset.
- Evidence to keep:
- a note of which zones and pots you were using.
Evidence: Bosch Freestanding Range Error Codes
- 3
Circuit breaker reset
No special tools
Procedure
- Who:
- you.
- How:
- switch the appliance off at the circuit breaker, wait five minutes and switch it back on, as Bosch instructs.
- Result that matters:
- whether it starts without E302.
- If it does not return:
- the overheating was a one off.
- If it returns:
- call Bosch service with your notes.
- Evidence to keep:
- photos and notes from each occurrence.
Evidence: Bosch Freestanding Range Error Codes
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Bosch
- Product type
- Ovens
Known code variants
- Bosch E302
- Bosch range E302 overheated
- e302
What it means
For the freestanding ranges Bosch documents on its US site, code 302 has two meanings depending on how it is shown: e302 means the power board has overheated and E302 means the control panel has overheated. For E302, Bosch asks you to check the room temperature and the position of pots, because they affect the heat reaching the panel. For e302 it refers you straight to service. The code alone does not point to a faulty part: it signals excess heat in the electronics.
Warnings and stop conditions
- Mediumeditorial warning
With repeated e302 or E302, do not open the range to look at the electronics: they run on mains voltage and may be hot. Inspection belongs to Bosch service.
Evidence: Bosch Freestanding Range Error Codes
Symptoms and causes
Probable causes · in order
- Heat on the control panel from pots or roomPossible
Matches E302: it appears while cooking with pots near the panel or in a very hot kitchen, and clears after cooling and moving them.
Evidence: Bosch Freestanding Range Error Codes
- Power board overheatedPossible
Matches lowercase e302: Bosch gives no owner steps and refers you to service.
Evidence: Bosch Freestanding Range Error Codes
- Fault that persists after coolingPossible
The code returns with the appliance cold and after the five minute reset; it needs Bosch service diagnosis.
Evidence: Bosch Freestanding Range Error Codes
Virtual technician
Does E302 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Bosch Freestanding Range Error Codes
Bosch · 2026 · official_doc
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