The number, prefix and sometimes alternating symbols identify the message for the correct model. A single letter can refer to several different conditions.
What the observation means
Codes vary between brands and product families. They support interpretation of the manufacturer's instructions, not an automatic parts diagnosis.
A useful next step
Copy the full sequence or retain an existing safe photograph. Note the active zones and cookware at the time. Follow any stop-use instruction and do not repeatedly clear the code to continue cooking or buy a component based on a generic online code list.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.