Quick diagnosis
What this code is telling you
Most likely trigger
Failed humidity sensor or thermistor
Recommended replacement
Convection Thermistor Sensor
Diagnostic path
4 ordered checks
Part fit
Exact model number required
Safety first
Before opening the appliance
Unplug the appliance before removing panels or testing internal components. Do not bypass safety switches or live-test high-voltage, gas, refrigerant, or combustion components unless you are qualified to do so.
Read the full safety disclaimerRoot cause
Why the control reported this error
The microwave control displays this fault after detecting an abnormal sensor, keypad, door, inverter, or heating condition. Check failed humidity sensor or thermistor first; dislodged wire plug and faulty main control unit can trigger the same code and should be ruled out before replacing convection Thermistor Sensor.
Symptoms
What you may notice
- ✓Convection bake feature disabled
- ✓E-02 code displays
- ✓Unit chimes error alert
Possible causes
Check the most likely causes first
- 1
Failed humidity sensor or thermistor
Start here when it matches your symptoms.
- 2
Dislodged wire plug
- 3
Faulty main control unit
Diagnostic sequence
Work through these checks in order
Stop when you find the fault. Do not perform a step that requires skills or live testing you are not qualified to do.
- 1
Check 1
Disconnect power plug.
- 2
Check 2
Disconnect electrical power before opening panels. Locate thermistor near exhaust duct housing and test resistance.
- 3
Check 3
Disconnect electrical power before opening panels. Ensure harness plug is firmly locked into control board.
- 4
Check 4
Replace temperature thermistor sensor.
Replacement part reference
Convection Thermistor Sensor
Exact OEM part number
Model number required
Fitment note
The exact OEM part number varies by model and production revision. Verify the complete model number before ordering.
Verify the appliance model before ordering.
Manufacturers can use different parts under the same error code across model families and production revisions.
Where do I find my model number? →FixCodeDB may earn a commission from qualifying purchases made through affiliate links.
Common questions
Quick answers for this fault
What should I check first for E-02?
Start with failed humidity sensor or thermistor. If that checks out, continue through the diagnostic sequence above rather than replacing a part based on the code alone.
Does E-02 always mean Convection Thermistor Sensor is bad?
No. An error code identifies the condition the control detected, not a guaranteed failed part. Confirm the likely causes and wiring first. The exact OEM part number varies by model and production revision. Verify the complete model number before ordering.
When should I stop troubleshooting E-02 myself?
Stop if the next step requires live electrical testing, sealed-system work, gas or combustion service, or any procedure outside your training. Unplug the appliance before removing panels or testing internal components. Do not bypass safety switches or live-test high-voltage, gas, refrigerant, or combustion components unless you are qualified to do so.
Was this useful?
Did these checks help with your Sharp E-02 error?
Keep diagnosing
Related Sharp guides
Different problem?
Search another code or symptom
Go back to the main diagnostic search and try the code, symptom, appliance, component, or brand.
Open diagnostic search →