GE Dishwasher Error Code AUTO & SPEED

The AUTO & SPEED code indicates a turbidity sensor fault. The turbidity sensor monitors how dirty the wash water is so the Auto and Speed cycles can adjust accordingly. When the control board cannot get a reliable reading from this sensor, it flags the fault and defaults to assuming the water has high turbidity. The root cause is typically a dirty sensor, clogged filters, drain issues, or a wiring problem.

A reset may temporarily clear the code, but if the underlying cause is not addressed, the fault will return when the Auto or Speed cycle runs again and the sensor provides an unreliable signal. Performing a reset is useful for confirming whether the fault is intermittent, but it is not a substitute for diagnosing and correcting the actual problem.

If the fix is simply cleaning the sensor, filters, or drain components, the cost may be minimal, primarily your time. If the turbidity sensor needs to be replaced, parts typically range from $20 to $60 depending on the model, with professional labor adding $100 to $200 or more depending on your area. Wiring repairs fall somewhere in between depending on the extent of the damage.

Start by cleaning the filters and drain system, then locate and clean the turbidity sensor lens to remove any grease or mineral buildup. Next, inspect the sensor wiring harness for loose connectors or damage. If the error persists after those steps, the turbidity sensor itself may need to be replaced.

The dishwasher is unlikely to cause a safety hazard with this fault active, but wash performance will be affected since the system defaults to assuming maximum soil levels. Running repeated cycles without addressing the fault can also mask other developing issues in the drain or filter system. It is best to diagnose and resolve the fault before continued regular use.