Dryer displays E12; may not start or may shut down quickly.

Safety first: Unplug the dryer.

Steps to resolve sensor circuit error:

• Inspect and clean sensor bars: Inside the drum, clean the moisture sensor bars with alcohol to remove conductive residue.
• Check for shorts: Access the back of the sensor bars and inspect wiring. Ensure no wires are pinched or touching the drum or chassis.
• Continuity tests: With wires disconnected, verify that each bar is isolated from ground and from each other (infinite resistance). If a bar is shorted to ground, replace the sensor assembly.
• Module/board check: If wiring and bars are correct, the moisture sensing circuit on the control board may be defective.