{"id":17299,"date":"2025-05-09T05:32:47","date_gmt":"2025-05-09T12:32:47","guid":{"rendered":"https:\/\/www.appliancepartspros.com\/b\/?p=17299"},"modified":"2025-05-09T05:32:56","modified_gmt":"2025-05-09T12:32:56","slug":"what-the-e309-error-code-means-on-bosch-ovens","status":"publish","type":"post","link":"https:\/\/www.appliancepartspros.com\/c\/what-the-e309-error-code-means-on-bosch-ovens\/","title":{"rendered":"What the E309 Error Code Means on Bosch Ovens"},"content":{"rendered":"
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Is your Bosch oven flashing the E309 error code and refusing to work? This error usually signals a communication breakdown between the display (user interface) and the main control board. But no worries\u2014this guide will show you how to troubleshoot the issue, reset the oven, and know when it\u2019s time to call in a replacement part.<\/span><\/p>\n

If you find out that you need any replacement parts for your appliance<\/span> while you\u2019re troubleshooting, you can enter your <\/span>model number<\/b><\/a> at <\/span>AppliancePartsPros.com<\/b><\/a> to order them. Most orders arrive in just two business days, and we have thousands of free guides to show you how to install your new parts.<\/span><\/p>\n

The information in this article may not apply to your specific appliance model. We recommend consulting your manufacturer’s documentation or<\/span> contact us<\/b><\/a> with any questions.<\/span><\/em><\/p>\n\n

What does the error code mean?<\/span><\/h2>\n

On Bosch gas slide-in ranges, the E309 error code indicates that the control module has failed an internal ROM (Read Only Memory) check on startup.<\/span><\/p>\n

The control module contains the logic board and programming that operates the various oven functions. At power-up, it runs a self-check on its internal ROM chip.<\/span><\/p>\n

The E309 error signifies this ROM check has failed and the control module needs to be reset or replaced. It’s not a common error but can occur over time from electrical spikes or power fluctuations corrupting the module’s memory.<\/span><\/p>\n

When an E309 is present, the oven will be unresponsive and won\u2019t heat up. A control module reset or replacement is required to resume normal operation.<\/span><\/p>\n

Safety precautions<\/span><\/h2>\n

When working on any appliance, remember to keep safety first. Here are some tips to keep in mind:\u00a0<\/span><\/p>\n