Oster Appliance Error Codes

Complete diagnostic guide for Oster small household appliances including blenders, coffee makers, toaster ovens, air fryers, and microwaves in the United States.

Important Note

Oster appliances (part of Newell Brands) use various error codes that may vary significantly by model and product type. Some models may use E-codes (E1, E2, E02, E04), while others may use different error indicators or messages.

Error codes are not always fully documented in user manuals. Always refer to your specific model's user manual for model-specific error codes and troubleshooting procedures. When contacting Oster support, have your model number and serial number ready.

Temperature and Sensor Errors

Error codes for Oster appliances related to temperature sensors, overheating, and temperature control problems.

Error Code / Indicator	Meaning	Possible Causes	Solutions
E2	Temperature sensor short circuit / Overheating detected	Temperature sensor (NTC) short circuit Overheating condition detected Temperature sensor defective Sensor connection problem Appliance not heating properly	Turn off and unplug the appliance Allow appliance to cool down completely Check temperature sensor connections Inspect sensor for damage Contact Oster support for sensor replacement Check warranty coverage
E02 / E04	Self-protection mode / Temperature too low or sensor problem	Temperature too low for safe operation Sensor problem detected Self-protection mode activated Common during grilling or combination cooking Temperature sensor reading error	Press STOP/CANCEL button Allow appliance to cool down Check temperature sensor Ensure proper room temperature Restart the appliance Contact support if problem persists

Control Panel and Electronics Errors

Error codes for Oster appliances related to control panel, keypad, and electronic control system problems.

Error Code / Indicator	Meaning	Possible Causes	Solutions
E1	Control panel error / Keypad malfunction / Airflow problem	Keypad or control panel defective Control board receiving incorrect signals Power supply fluctuation Insufficient airflow (toaster ovens) Internal fan failure (toaster ovens) Blocked air intake	Unplug appliance and wait 30 seconds Plug back in and try reset Check if control panel is loose or damaged Test in different power outlet Clean air intake and ventilation openings Check internal fan (toaster ovens) Contact Oster support for control board replacement

Air Fryer and Convection Oven Errors

Error codes for Oster air fryers and convection ovens related to cooking functions and operation.

Error Code / Indicator	Meaning	Possible Causes	Solutions
E Notification Codes	General error notification / Operation needs attention	Various operational issues during cooking Temperature or timing problems Sensor reading errors Cooking process interruption	Refer to your specific model's user manual Check error code in manual for specific meaning Reset the appliance Ensure proper setup and ingredients Contact Oster support with model number
E1 (Air Fryer)	Insufficient airflow / Fan problem	Insufficient airflow in cooking chamber Internal fan not working Blocked air intake or exhaust Fan motor problem	Check air intake and exhaust openings Clean ventilation openings Ensure nothing blocking airflow Check fan operation Contact support if fan not working

General Troubleshooting Tips

General maintenance and troubleshooting tips to prevent common Oster appliance errors.

Error Code / Indicator	Meaning	Possible Causes	Solutions
Appliance Not Starting	Power or control issue	Power cord not properly connected Control panel not responding Safety lock engaged Circuit breaker tripped	Check power cord connection Try different power outlet Check circuit breaker Ensure safety locks are disengaged Unplug and restart after 30 seconds
Poor Performance	Reduced functionality or performance	Insufficient cleaning Mineral buildup Worn components Improper usage	Clean appliance thoroughly Descale if applicable Check for worn parts Follow manufacturer usage instructions Regular maintenance prevents issues
Unusual Noises	Grinding, rattling, or loud sounds	Mechanical wear Loose components Fan or motor problems Foreign objects	Inspect for loose parts Check fan and motor operation Remove any foreign objects Contact support if noise persists

Need More Help?

If you are experiencing problems with your Oster appliance that are not covered by these error codes, or if the provided solutions do not resolve your issue, we recommend:

Consult your Oster appliance user manual for model-specific information
Visit the official Oster support page: oster.com/support
Contact Oster customer service (Newell Brands) in the United States with your model number and serial number
Regular maintenance: clean appliances regularly, descale coffee makers, clean air fryer baskets
Ensure proper ventilation around appliances to prevent overheating
Seek help from a qualified appliance repair technician
Check warranty coverage if your appliance is still under warranty

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