Amana Washer Error Code SH

SH means the control board has detected either a short circuit in the thermistor or a temperature reading near the thermistor above 125°F. The thermistor is the temperature sensor that reports water or component temperature to the control board. When the control sees this out-of-range signal, it shuts down the wash cycle to prevent damage.

No, you should not continue running the washer with an active SH code. The code indicates either a malfunctioning temperature sensor or a genuinely high temperature condition, and the control has already halted operation as a protective measure. Running the machine in this state risks damage to the control board, wiring, or other internal components. Resolve the fault before resuming normal use.

Yes, and wiring is the first thing to check specifically because a short in the wiring harness produces the same electrical signal as a shorted thermistor. A wire pinched against the cabinet, a corroded terminal, or a connector seated on the wrong pin can all cause the SH code. Always inspect and test the wiring before purchasing a replacement thermistor to avoid an unnecessary part purchase.

Start by disconnecting power, then remove the front panel and inspect all wiring between the thermistor and the control board for loose connections, pinched wires, or corrosion. Reseat any connectors and look for visible wire damage. If wiring is intact, test the thermistor's resistance with a multimeter and compare it to the specification in your model's service manual. A thermistor reading near zero ohms confirms an internal short and the part needs replacement.

If the fix is a loose wiring connector, the repair costs nothing beyond your time. A replacement thermistor is generally an inexpensive part, often in the $15 to $40 range depending on the model, and is a manageable DIY repair with basic tools. If the control board is the cause, board replacement is more expensive, typically $100 to $250 for the part alone, and professional installation adds labor cost. Getting the wiring and thermistor inspected first keeps the repair cost low in the majority of cases.