Kenmore Dryer Error Code F-29

The F-29 error code on a Kenmore dryer indicates that the moisture sensor strip has developed a short circuit. This code is exclusive to the diagnostic test mode, meaning it will not appear during normal drying operation but surfaces when running the built-in self-test routine. The moisture sensor system uses two metal sensor bars, typically located inside the drum near the lint filter, to detect the electrical conductivity of wet fabrics as they tumble past. When clothes are damp, they complete a low-level circuit between the bars, signaling the control board to continue the drying cycle. A short in this circuit causes continuous or erratic conductivity readings, which the control interprets as a fault.

The short can occur at the sensor bars themselves, in the wiring harness that connects the bars to the control board, or at the board-side connector. Corrosion, lint accumulation, fabric softener residue buildup on the sensor bars, or physical damage to the insulation on the sensor wiring are the most common culprits. A shorted sensor will often cause overdrying or prevent automatic cycles from terminating correctly, since the control board receives a false signal about fabric moisture content.

Diagnosis should begin with TEST #5 as referenced in the service documentation for this unit. This test procedure is designed to isolate whether the fault lies in the sensor strips, the wiring, or the electronic control board. Resistance and continuity checks along the sensor circuit are typically part of this test, and results will guide the technician toward the defective component. Attempting repairs without running this test risks replacing the wrong part.