Error code
E-22
Meaning
Temperature sensor wires are shorted together
Moderate
What to do
Why this happens
Potential causes include a short circuit in the sensor harness, an internal short within the oven sensor, connector pins touching on either the CN201 main PCB or CN02 sub PCB, and moisture damage to the sensor harness.
How to fix it
Replace sensor or dry and repair harness if moisture present
SourceSamsung service manual