Dryer shows E12 and may stop heating or terminate the cycle early.

Safety first: Unplug the dryer before cleaning internal sensor wiring.

• Locate the moisture sensor bars: Inside the drum, usually near the lint filter opening, there are two metal strips (sensor bars). These detect moisture in the laundry.
• Clean the sensor bars: Using a soft cloth and a bit of white vinegar or mild detergent, thoroughly clean the bars to remove fabric softener residue and lint. Dry them completely.
• Check for physical damage: Ensure the bars are not bent or broken and that they are firmly mounted.
• Inspect wiring behind the sensor: Remove the front lower panel or lint filter housing to access the sensor wiring. Check for loose connectors or broken wires leading to the main PCB.
• Test continuity: With a multimeter, verify continuity from each sensor bar to the connector on the control board. Repair any open circuits.
• Reassemble and test: After cleaning and securing connections, run an automatic drying program. If E12 persists, the moisture sensing circuit on the PCB or the sensor assembly itself may need replacement.