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Error code reference

Bosch Dishwasher Error Code 3

Door open after program start.

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What the 3 error code actually means

Your Bosch dishwasher detected that the door was opened after you started a wash cycle, so it paused the program to prevent water from spraying out. Simply close the door firmly and restart the cycle to continue washing. If this keeps happening without you opening the door, the door latch may need to be inspected or replaced.

Diagnostic procedure

The full 3 procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Program stops; new start is possible after closing door.
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Most common causes of 3

Ranked by how often they cause this code
  1. 1Door opened during cycle
  2. 2Door not fully latched at start
  3. 3Worn or faulty door latch switch
  4. 4Misaligned door latch or strike plate
  5. 5Damaged wiring harness to latch switch

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Questions people ask about 3

What does 3 mean on a Bosch dishwasher?
Error code 3 on a Bosch dishwasher means the door was opened after a wash program had already started. The control system detects this through the door latch switch and immediately stops the cycle. Closing the door firmly allows you to start a new program without any additional reset steps.
Is it safe to keep using my dishwasher when error code 3 appears?
Yes, error code 3 is a safety-oriented pause rather than a critical failure. The dishwasher halts the program to prevent water from spraying while the door is open, which protects both the user and the surrounding area. Once the door is securely closed, the appliance is safe to operate again.
How much does it cost to repair a Bosch dishwasher showing error code 3?
If the error is simply caused by the door being opened mid-cycle, there is no repair cost involved. If a faulty door latch switch needs to be replaced, parts typically range from $15 to $60 depending on the specific model, with professional labor adding $75 to $150 or more depending on your location and service provider. Replacing the latch switch is a relatively straightforward repair that experienced DIYers can often handle themselves.
How do I fix error code 3 on my Bosch dishwasher?
If you or someone else opened the door mid-cycle, simply close it firmly until it latches and restart the program. If the error appears without the door being opened, inspect the door latch for wear or misalignment and check that the door seals tightly when pushed shut. A repeatedly occurring error without an obvious cause points to a faulty latch switch that may need replacement.
Will resetting my Bosch dishwasher clear error code 3?
A formal reset is not required to clear error code 3. The dishwasher automatically allows a new program start as soon as the door is closed again. If the error is caused by a faulty latch switch or wiring issue, resetting the appliance will not prevent the error from recurring during the next cycle.

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