Sub-Zero Oven & Stove Error Codes

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📋 Error Code Index — Sub-Zero Oven & Stove

E1Oven Temperature Sensor Open E2Oven Temperature Sensor Short E3Cooling Fan Fault E4Door Lock Motor Fault E5Control Board Memory Fault F1Control Board Failure

Oven Temperature Sensor Open

RTD probe open circuit — oven cannot monitor temperature.

Medium Priority

Possible Causes
RTD probe failed open
Connector loose or corroded
Probe wiring open
Diagnostic Steps
1Test probe resistance — ~1080Ω at room temperature
2OL confirms failed probe
3Reseat connector before replacing
4Replace sensor if open confirmed

Oven Temperature Sensor Short

RTD probe shorted — incorrect temperature reading.

Urgent

Possible Causes
RTD probe failed shorted
Probe wiring touching cavity metal
Diagnostic Steps
1Test probe — near 0Ω confirms short
2Inspect probe wiring
3Replace sensor — do not operate until repaired

Cooling Fan Fault

Cooling fan not operating — overheating risk to control electronics.

High Priority

Possible Causes
Fan motor failed or seized
Fan blade obstructed
Wiring to fan open
Diagnostic Steps
1Check fan blade for obstruction
2Test fan motor winding continuity
3Replace cooling fan motor if failed

Door Lock Motor Fault

Door lock not confirming position during self-clean cycle.

Medium Priority

Possible Causes
Lock motor failed
Mechanical obstruction in latch path
Wiring to lock open
Diagnostic Steps
1Check latch for obstruction
2Test lock motor continuity
3Replace lock assembly if motor failed

Control Board Memory Fault

Non-volatile memory on control board has lost calibration data.

High Priority

Possible Causes
Control board EEPROM failure
Power interruption during programming
Diagnostic Steps
1Power cycle — disconnect 5 minutes
2Replace control board if fault persists

Control Board Failure

Main control board detected an internal fault — oven will not operate.

High Priority

Possible Causes
Control board component failure
Power surge damage
Diagnostic Steps
1Disconnect power 60 seconds and retry
2Inspect board for burn marks
3Replace main control board if fault persists

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Important Notice: Error code information on this page is based on Sub-Zero manufacturer service documentation. Oven repair involves high-voltage components. Gas appliances require licensed gas technician service. AppliancesCare Appliance Repair LLC provides this information for educational purposes only.