Bosch Dishwasher Error Code E:31

E:31 means the dishwasher completed a rinse cycle without proper heating, leading to poor washing and drying results. This code only appears on Bosch models equipped with the Zeolite drying system, which uses a mineral-based container and a dedicated tubular heating element. The fault typically points to a failed discharge cap, a faulty Zeolite heating element, water contamination inside the Zeolite container, or a combination of these issues.

A reset may temporarily clear the E:31 code from the display, but it will not resolve the underlying hardware fault. The error will return once the dishwasher runs another cycle and the Zeolite heating system fails to perform again. The faulty components must be physically repaired or replaced to permanently clear the code.

Repair costs vary depending on which components need replacement. Parts involved include the discharge cap or sealing, the Zeolite heating element, and potentially the Zeolite container, with labor added on top. In general, expect total repair costs to fall somewhere in the range of $150 to $400 depending on your location, the technician's rates, and how many components need to be replaced.

Repairing E:31 involves replacing specific components inside the Zeolite system, including the discharge cap, heating element, and potentially the Zeolite container itself. Accessing these parts requires disassembling portions of the dishwasher and draining water from the Zeolite system, which is a moderately complex repair. Most homeowners will benefit from having a qualified appliance technician handle this service.

The dishwasher may still run cycles while showing E:31, but the results will be poor, with dishes coming out inadequately cleaned and dried. Continuing to run the machine without addressing the fault could worsen water contamination inside the Zeolite container. It is best to limit use until the repair is completed.