Bosch Washing Machine Error E:00 <-> -18: What It Means and How to Fix It
Short answer
E:00 <-> -18 on a Bosch washing machine means: the pump is blocked (obstructed). The display alternates between E:00 and -18. First step: Clean the washer drain hose and/or drain pipe.
Pump blocked
How to fix it
- 1Clean the washer drain hose and/or drain pipe.
- 2Clean the pump to clear the blockage (see the owner's manual).
Safety
- Escaping water may be hot: switch off and unplug before opening the pump.
When to call a professional: If cleaning does not clear the code.
Applies to: Bosch washing machines
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Source
Based on Bosch's official error code information: Bosch US – Washer Error Codes. Last checked 2026-10-28. Codes and their meaning can differ by model and region; check your appliance's manual.
Frequently asked questions
What does Bosch washing machine error code E:00 <-> -18 mean?
The pump is blocked (obstructed). The display alternates between E:00 and -18.
How do I fix E:00 <-> -18 on a Bosch washing machine?
Clean the washer drain hose and/or drain pipe. Clean the pump to clear the blockage (see the owner's manual).
When should I call a technician for E:00 <-> -18?
If cleaning does not clear the code.