Refrigerator displays SH for the fresh food temperature; refrigerator may run too cold or too warm.

Safety first: Unplug the refrigerator before working on internal components.

Step 1: Access the fresh food thermistor

• Remove shelves and locate the small sensor cover on the rear or side wall.
• Remove the cover to expose the thermistor and connector.

Step 2: Inspect for moisture and corrosion

• Look for condensation or water inside the sensor housing.
• Check the connector for green/white corrosion or signs of a short.

Step 3: Test the thermistor

• Disconnect the thermistor from the harness.
• Measure resistance with a multimeter. A shorted thermistor will read near 0 ohms.
• If shorted, replace the thermistor.

Step 4: Dry and protect the area

• Dry any moisture with a clean cloth.
• Ensure the new thermistor and connector are fully seated and the cover is properly installed to limit future moisture intrusion.

Step 5: Restore power

• Reconnect power and monitor the display. The SH code should clear once a valid sensor reading is detected.

When to call a technician: If the thermistor tests good but SH persists, the harness or control board sensor circuit may be shorted and should be evaluated by a professional.