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Bosch Washer E:30 Error Code

Water level problem (read the number after the code). Here is what it means and how to clear it, easiest fix first.

E:30
Moderate DIY

E:30 is a general message on newer Bosch models, and the number shown after it points to the cause. -10 points to the water supply or the water level sensor. -20 can mean too much detergent, water added to the drum during a cycle, or a faulty fill valve. -80 points to drainage, such as a kinked hose or a blocked pump.

Look at the second part of the display: E:30/-10 (often with a faucet icon), E:30/-20 or E:30/-80. Bosch says E:36/-10 needs the same drain checks as E:30/-80. 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 E:30

  1. For -10: check the water supply

    Make sure the tap is fully open and the inlet hose is not kinked. Clean the inlet filters as described under E17. If the sensor is at fault, Bosch suggests waiting about 5 minutes, then turning the washer off and back on.

  2. For -20: cut the detergent

    Use less detergent, and do not add water to the drum while a cycle is running. To knock down suds, mix 1 tablespoon of fabric softener into about 2 cups (0.5 L) of water and pour it into compartment II.

  3. For -80: check the drain

    Unplug the washer first. If the floor around the outlet or cord is wet, switch off the washer's circuit breaker instead of touching the plug. Make sure the drain hose is not kinked, its highest point is no more than 39 in (1 m) above the floor, and there are no unsuitable hose extensions. Clean the drain pump as described under E18, then screw its cap fully back in with the handle vertical.

When to call a technician

If the code returns after these checks, especially -10 after a power reset or -20 with correct dosing, the water level sensor or filling valve may be faulty. Call a technician.

Parts that commonly cause E:30

Order parts by your exact model number so they fit.

Other Bosch washer codes

Frequently asked questions

What does E:30 mean on a Bosch washer?

E:30 is a general message on newer Bosch models, and the number shown after it points to the cause. -10 points to the water supply or the water level sensor. -20 can mean too much detergent, water added to the drum during a cycle, or a faulty fill valve. -80 points to drainage, such as a kinked hose or a blocked pump.

Can I fix Bosch E:30 myself?

Often. The first steps above are safe checks a homeowner can do. If they don't clear E:30, the cause is likely a worn part that needs replacing.

What if E:30 keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when E:30 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