Bosch Dishwasher Error Code Not Heating

This error means the dishwasher's control system detected that water temperature rose less than 9°F over a 15-minute period during the wash cycle. The dishwasher monitors temperature via a sensor and expects the heating element to raise water temperature at a minimum rate. When that rate is not met, the fault is logged. Common causes include a failed heating element, a faulty temperature sensor, or a defective control board relay.

Running the dishwasher with this error active is generally not dangerous, but cleaning performance will be significantly reduced because water is not reaching proper wash temperatures. Sanitization cycles will not be effective, and grease and bacteria may not be fully removed from dishes. It is best to resolve the fault before relying on the appliance for regular use.

A reset may temporarily clear the error from the display, but if the underlying component has failed, the fault will return as soon as the dishwasher attempts to heat water again during the next cycle. Resetting is useful for ruling out a one-time control glitch but should not be considered a fix. A proper diagnosis of the heating element, temperature sensor, and associated wiring is needed to resolve the error permanently.

Some steps, such as inspecting wiring connections or running the hot water before a cycle to raise inlet temperature, can be done without special tools. Replacing the heating element or NTC temperature sensor requires basic electrical safety knowledge, a multimeter, and the ability to access the dishwasher's interior components. Control board replacement is more complex and may be better handled by a qualified technician.

Repair costs vary depending on the failed component. A replacement heating element typically ranges from $30 to $80 for the part alone, while an NTC temperature sensor is generally $15 to $40. Control board replacement is the most expensive scenario, with parts alone often ranging from $100 to $250 or more. Adding labor costs for a professional technician will increase the total, generally by $75 to $150 depending on your region.