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Bosch Washer E20 / F20 Error Code

Unexpected heating. Here is what it means and how to clear it, easiest fix first.

E20 / F20
May need a pro

The washer detected heating at a time when it should not have been heating. This points to a fault in the heating circuit or its control, which needs professional diagnosis.

Listed on Bosch's US support site; Bosch models sold in the UK and Europe may use a different code, so check your manual.

Safety first: unplug the washer (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix Bosch E20 / F20

  1. Reset the washer

    Turn the washer off for a short time, then turn it back on. Bosch suggests this first.

  2. Stop if it returns

    If the code appears again, turn the washer off, unplug it and do not keep running it.

When to call a technician

If a reset does not clear it, contact Bosch support or a technician to inspect the heating circuit.

Parts that commonly cause E20 / F20

Order parts by your exact model number so they fit.

Other Bosch washer codes

Frequently asked questions

What does E20 / F20 mean on a Bosch washer?

The washer detected heating at a time when it should not have been heating. This points to a fault in the heating circuit or its control, which needs professional diagnosis.

Can I fix Bosch E20 / F20 myself?

Only the basic checks. You can safely try the steps above, but E20 / F20 usually points to a part or fault that needs a technician.

What if E20 / F20 keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when E20 / F20 appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

References