Bosch Dishwasher Error Code dr:03

The dr:03 code indicates a damaged or malfunctioning temperature sensor in the motor control system. This sensor monitors heat levels within the motor assembly to protect the unit from damage. When the sensor sends a signal that is out of range or absent, the dishwasher logs dr:03 and may stop operating. The recommended repair is to replace the sensor and verify the fix using the built-in test program P4.

It is not recommended to continue running the dishwasher while dr:03 is active. The motor control temperature sensor exists to help prevent the motor assembly from overheating, and operating without a functioning sensor removes that protection. Continued use could risk damage to the motor or control board. Address the fault before running additional cycles.

A basic reset may temporarily clear the error code from the display, but it will not fix the underlying sensor problem. The code will return once the dishwasher attempts to read the sensor signal during the next cycle. A lasting repair requires physically replacing the damaged sensor and confirming the fix by running test program P4.

Replacing the motor control temperature sensor requires disassembling parts of the dishwasher interior and working with electrical connectors, which is within reach for experienced DIYers. However, you should be comfortable with appliance disassembly and basic electrical inspection before attempting this repair. Running the P4 diagnostic test after the repair is important to confirm the fault has been resolved. If the code returns after sensor replacement, a technician should assess the wiring and control board.

If only the temperature sensor needs replacement, parts costs are typically modest, generally in the range of $20 to $60 depending on the specific model. If professional labor is involved, total repair costs including diagnostics and installation can range from $100 to $250. A motor control board replacement, if needed, would push costs higher, potentially $200 to $400 or more for parts and labor combined.