Bosch Dishwashers Won't Start: How to Fix It Yourself
A Bosch dishwasher that will not start when you press the button is usually caused by the door not latching fully, the control panel needing a reset, or the child lock being activated. These are quick fixes that do not require any parts.
⚠️ Safety First
- Turn off the breaker for the dishwasher before testing electrical parts.
- Never bypass the door latch safety switch.
Parts You May Need
Door latch (if faulty)
~$12–$20
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Step-by-Step Repair
- 1
Check the door latch
Close the dishwasher door firmly until you hear it click. If it does not click or feels loose, the latch may be out of alignment. Inspect the latch hook and the catch on the tub for any food debris or damage that prevents full engagement.
- 2
Check for child lock
Bosch dishwashers have a child lock feature that disables the start button. Press and hold the child lock button (or the button combination shown in your manual — usually the rightmost two buttons) for 3 seconds to toggle it off. A key icon on the display means it is active.
- 3
Reset the control board
Turn off the dishwasher breaker for 60 seconds, then turn it back on. Open and close the door, select a cycle, and press start. A power glitch can freeze the control board and a reset clears it.
- 4
Verify the water supply
Some Bosch models will not start if they detect no water supply. Check that the water valve under the sink is fully open. Turn it off and on again to clear any air locks.
- 5
Test the door switch
If the above steps do not work, the door switch may be faulty. Turn off the breaker, remove the inner door panel, and locate the door switch. Test it with a multimeter for continuity when pressed. No continuity means it needs replacing.
If That Didn't Work
- Blown thermal fuse on the control board
- Faulty control panel touchpad
- Tripped GFCI outlet (if hardwired through GFCI)
When to Call a Professional
If the control board is dead (no lights, no response at all after a breaker reset), the board itself may have failed. Bosch control board replacement runs $150–$300 with labor.
Related Repairs
Disclaimer: This guide is for informational and educational purposes only and does not constitute professional repair advice. All repairs are performed at your own risk. RepairItFree.com is not liable for any personal injury, property damage, device damage, voided warranties, or other losses resulting from the use of this information.
If you are unsure about any step — especially anything involving electricity, gas, water, or refrigerant — stop and consult a qualified professional. Your safety is more important than saving money.
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