How to Fix Bosch Dishwasher Error E30

Bosch Dishwasher Error E30 overlay image

Error Code: E30 Difficulty: Hard

Problem: Voltage is too high.

How to Fix E30 Error (Step-by-Step)

  1. Turn off the circuit breaker for the dishwasher to completely cut off the power.
  2. Slide the dishwasher out from its installation spot to get to the control board, usually located in the door panel or at the base.
  3. Take a clear picture of the wire connections before you start, for easy reference.
  4. Carefully unplug all the wires connected to the control board.
  5. Remove the screws that are holding the control board in place and take out the old board.
  6. Put the new control board in the same spot and secure it with the screws.
  7. Reconnect all the wires by looking at the picture you took, put the dishwasher back, and turn the power on.
  8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Next Steps and Parts

Verified Compatible Alternatives:

  • 00438026
  • 00622058
  • 10028963

Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.

When It’s Better to Replace Than Repair

Sometimes replacing an appliance makes more financial sense than putting more money into repairs.
Here are a few signs it may be time to shop for a new one:

  • Appliance over 8-10 years old
  • Repair cost over 50% of replacement
  • Multiple recent breakdowns
  • Major component failure

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