Cosori Air Fryer Error Codes — Complete List

Cosori air fryers show E-codes for sensor and thermal issues: E1 (open temperature monitor), E2 (short), E3 (overheat protection), E4 (wrong voltage), and E12 (DC motor failure on newer models). For E1/E2/E3/E12 the manual directs Customer Support; E3 is recoverable with a full cool-down and vent cleaning; E4 is solved by moving to a 120V outlet.

• E1 E1 is Cosori's temperature-monitor open-circuit code — the thermistor or its wiring has broken open.
• E2 E2 is the temperature-monitor short-circuit code.
• E3 E3 is the overheat-protection alarm — the fryer got too hot and shut down.
• E4 E4 is a voltage-error alarm — the fryer detects wrong mains voltage.
• E12 E12 is the DC-motor failure code on newer Cosori models.

Don't see your code?

Codes apply across Cosori D-series, KAAP-series, CPDV-series and similar. Confirm your exact SKU against the PDF manual link before ordering parts.