GE Dryer Error Code 004

Error code 004 on a GE dryer indicates an Outlet Thermistor Open error. This means the control board detected an abnormal reading from the outlet thermistor, which monitors exhaust air temperature, more than 10 times and flagged a fault. The dryer stops operating to prevent unsafe conditions. The thermistor itself or its wiring circuit is the likely source of the problem.

Operating the dryer with this error active is not recommended. The outlet thermistor is part of the thermal monitoring system, and running the dryer without a functioning exhaust temperature sensor removes a safeguard against overheating. The dryer is designed to stop when this fault is detected for this reason. Resolve the fault before resuming normal use.

A power reset may temporarily clear the error display, but the code will return if the underlying problem with the outlet thermistor or its wiring has not been corrected. The control board sets the error after accumulating more than 10 high readings, so an unresolved fault will quickly re-trigger the code. A lasting fix requires inspecting and repairing or replacing the thermistor and associated wiring.

Many technicians and experienced DIYers can resolve this error by inspecting the outlet thermistor wiring for loose connectors or damage and replacing the thermistor if it tests as open on a multimeter. The thermistor is generally accessible and replacement involves disconnecting the wiring connector and swapping the component. If wiring or the control board is involved, the repair becomes more complex and may benefit from professional service.

If only the outlet thermistor needs replacement, parts typically cost in the range of $10 to $40, making it one of the more affordable dryer repairs. If a wiring harness repair or control board replacement is required, total costs can rise to the range of $100 to $300 or more depending on parts and labor. Diagnosing the exact cause before purchasing parts helps avoid unnecessary expense.