Maytag Washer Error Code T-19

The T-19 error code on a Maytag washer indicates a water temperature error, meaning the control board has detected that the water temperature is outside the expected range for the selected wash cycle. This code involves the water temperature sensing system, which typically includes a thermistor or temperature sensor mounted in the water inlet valve assembly or tub area. The control board monitors incoming water temperature and compares it against programmed parameters. When the detected temperature falls too far below or exceeds the expected value, the board flags the fault and halts or interrupts the cycle.

The most frequent cause of this error is a failed or out-of-range thermistor. Thermistors are resistive sensors whose resistance value changes predictably with temperature. If the sensor shorts, opens, or drifts out of calibration, the control board receives a signal it cannot interpret as a valid temperature reading. Problems with the wiring harness connecting the sensor to the control board, including corroded pins, broken wires, or loose connectors, can also produce this error by creating intermittent or false resistance readings.

Incoming water supply conditions can also trigger T-19. If the hot or cold water supply is not functioning correctly, or if water inlet valve screens are clogged with sediment, the washer may not be receiving water at the expected temperature. In some cases, the main control board itself may be the source of the fault if it is misreading valid sensor signals. Proper diagnosis requires checking sensor resistance, inspecting wiring continuity, and confirming adequate water supply before replacing components.