Bosch Oven Error ER2
⚡ Quick Answer: The Bosch oven error code ER2 indicates a malfunction in the heating element, often resulting in the oven not heating properly. This error may be acco... ✅ DIY Fixable
What Does Error ER2 Mean?
The Bosch oven error code ER2 indicates a malfunction in the heating element, often resulting in the oven not heating properly. This error may be accompanied by an unusual buzzing sound and a continuous beeping alarm. Common causes include unstable mains power, loose wiring connections, or a malfunctioning control module. If the issue persists after resetting, further inspection is recommended.
Common Symptoms:
- Oven does not heat
- Continuous alarm/beeping with ER2 shown
- Display shows ER2 upon startup or attempted operation
Possible Causes
- Faulty or unstable mains power connection to oven (medium)
- Loose or poor terminal connection block/wiring at oven input (medium)
- Control module malfunction affecting power or diagnostics (low)
How to Fix Error ER2
DIY Fix Verify power and reset circuit
- Turn off the oven and disconnect power at the breaker or fuse box.
- Wait 10–30 seconds, then restore power to the oven to attempt a reset.
- Ensure the oven’s circuit breaker has not tripped and the supply voltage is stable.
- Check if ER2 clears and the oven now functions normally.
Technician Only Inspect electrical connections and oven control module
- Turn off power at the main breaker and lockout.
- Remove access panel to examine the terminal connection block where power enters the oven.
- Check for loose, burnt, or damaged wires and secure or replace as needed.
- Measure incoming voltage and continuity to ensure proper supply ranges.
- Test or replace the control module if power supply and wiring are verified good but ER2 persists.
Parts needed: Oven terminal connection block wiring, Control module (if needed)
- If mains power supply testing indicates an unstable or unsafe supply
- If ER2 persists after resetting and verifying external wiring
- If technician-level inspection and diagnostics identify control module or internal wiring faults
Next step
Choose the next step for ER2
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Heating Element
Heats the water or air inside the appliance to the required temperature.
- Typical part-only price
- $40 - $95
- DIY difficulty
- Medium
- Estimated time
- 30-45 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Model-compatible Oven parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Non-Scratch Cooktop Cleaner
A routine surface-care product. Confirm that it is approved for the specific glass, ceramic, enamel, or stainless finish.
Oven Thermometer
A diagnostic aid for comparing cavity temperature during a controlled check. It does not prove which internal component has failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | 3000W |
|---|---|
| component | Heating Element |
| resistance | 10-30 ohms |
| part_number | 00420483 |
| voltage_rating | 240V AC |
Common Questions
What does ER2 error mean on bosch oven?
ER2 indicates a heating element malfunction, causing the oven not to heat properly.
Can I fix bosch oven ER2 error myself?
Yes, you can reset the oven and check power connections.
How much does it cost to fix ER2 error?
$100–$500+ depending on parts and labor.
When should I call a technician for ER2?
Call if the error persists after troubleshooting or if there's a power supply issue.
Sources & References
Data last verified: 2026-07-25
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