Quick diagnosis
What this code is telling you
Most likely trigger
Defective humidity sensor
Recommended replacement
Humidity Steam 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 defective humidity sensor first; clogged sensor vent ports and unplugged sensor wiring harness can trigger the same code and should be ruled out before replacing humidity Steam Sensor.
Symptoms
What you may notice
- ✓Sensor cook feature halts after 5-10 seconds
- ✓SENSOR ERROR displayed on display screen
- ✓Beeper chimes 4 times
Possible causes
Check the most likely causes first
- 1
Defective humidity sensor
Start here when it matches your symptoms.
- 2
Clogged sensor vent ports
- 3
Unplugged sensor wiring harness
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
Unplug unit from wall outlet.
- 2
Check 2
Clean grease from air duct grilles near top vent.
- 3
Check 3
Disconnect electrical power before opening panels. Inspect humidity sensor wiring connector for loose leads.
- 4
Check 4
Replace humidity steam sensor.
Replacement part reference
Humidity Steam 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 SENSOR ERROR?
Start with defective humidity sensor. If that checks out, continue through the diagnostic sequence above rather than replacing a part based on the code alone.
Does SENSOR ERROR always mean Humidity Steam 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 SENSOR ERROR 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 GE SENSOR ERROR error?
Keep diagnosing
Related GE guides
F3 indicates the main control board senses a stuck or shorted touch key switch on the membrane.
E01 appears on certain 70-pint models with a built-in drain pump when Pump Out mode is selected but water is not being pumped out.
H2O code indicates insufficient water entered the dishwasher sump during the wash fill cycle.
Bad Line appears when the range or oven detects incorrect electrical wiring at the power connection.
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 →