GE dryer stops heating or shuts down with E4 on the display.

Safety first: Disconnect power at the breaker or unplug the dryer. Gas models: turn off gas supply.

Check inlet thermistor and high-limit thermostat:

• Access the front bulkhead or heater housing (varies by model). Remove the front panel or lower access panel.
• Locate the inlet thermistor (small sensor with two wires) and the high-limit thermostat (small round thermostat mounted on the heater housing or duct).
• Label and disconnect the wires.
• Test the high-limit thermostat for continuity with a multimeter. It should show continuity at room temperature. If open, replace it.
• Test the inlet thermistor resistance; compare to the tech sheet spec (commonly 10–15 kΩ at room temperature). Replace if open, shorted, or out of range.
• Inspect wiring for heat damage or loose connections; repair as needed.
• Reassemble, restore power, and run a test cycle.

Note: If parts and wiring test good but E4 remains, the main control board may be faulty and should be evaluated or replaced by a technician.