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ErrBase

Bosch Washing Machine Error Codes: Complete E and F Code Guide

Quick Answer

Bosch washing machines use the E-axis wash system with a horizontally-mounted drum and permanent magnet motor that is quieter than belt-drive competitors. Bosch error codes differ from other brands because the E-code numbering follows the Bosch/BSH convention: E01-E04 are door-related, E13 is water supply, E17 is fill timeout, E18 is drain timeout, E21 is motor timeout.

Bosch washing machines use the E-axis wash system with a horizontally-mounted drum and permanent magnet motor that is quieter than belt-drive competitors. Bosch error codes differ from other brands because the E-code numbering follows the Bosch/BSH convention: E01-E04 are door-related, E13 is water supply, E17 is fill timeout, E18 is drain timeout, E21 is motor timeout. The most common Bosch washer error is E18 (drain timeout), which is caused by the coin trap filter behind the small access panel on the lower-right front of the machine. Bosch uses a particularly fine mesh filter that clogs faster than Samsung or LG filters. Bosch diagnostic mode is entered by pressing the Start button while turning the cycle selector to position 8 (approximately the 5 o'clock position). Hold Start for 3 seconds. The display shows stored error codes.

BoschWasher

About These Bosch Washer Error Codes

Bosch uses E-codes: E01-E04 = door, E13 = water supply, E17 = fill timeout, E18 = drain timeout (most common), E21 = motor. Coin trap filter clogs faster than other brands due to finer mesh.

Most Common Error Codes

Coin trap filter clogged (E18)40%
Door lock mechanism fault (E01/E04)24%
Water supply hoses kinked or valves closed (E13)14%
Motor carbon brushes worn (E21 on older models)12%
Drain hose positioned too high (E18)10%

Symptoms You May Notice

  • E code on display panel
  • Washer stops mid-cycle
  • Water remains in drum
  • Door will not open or close
  • Washer will not fill
  • Motor not spinning

Tools Required for Diagnosis

Torx screwdriver setShallow pan and towelsMultimeterFlashlight

How to Identify Your Error Code

1

Clean the coin trap filter

Clean the coin trap filter: open the small access panel on the lower-right front. Pull out the small emergency drain hose and drain into a pan. Then turn the large filter cap counterclockwise. Bosch filters clog faster than other brands due to finer mesh - clean monthly.

2

Enter diagnostic mode

3

For door errors (E01-E04)

4

For E13/E17 (water supply)

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Bosch Washer Door Lock00619468 · $40–$70
Bosch Drain Pump00436440 · $40–$80
Bosch AquaStop Inlet Hose00667327 · $40–$60

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $60 (Parts) vs $1300 (New Machine)

Frequently Asked Questions

Where is the Bosch washer coin trap filter?
Behind the small access panel on the lower-right front of the machine. Open the panel, pull out the small emergency drain hose first to drain residual water, then turn the large filter cap counterclockwise. Bosch uses a finer mesh than most brands, so it needs cleaning monthly rather than quarterly.
What is AquaStop on a Bosch washer?
AquaStop is Bosch's flood protection system built into the water inlet hose. It contains a mechanical valve that shuts off water if the hose detects a leak or if the washer's internal tub overflows. Once triggered, the AquaStop hose may need to be reset or replaced - it is a one-time safety activation on some models.
Are Bosch washer parts interchangeable with other brands?
No. Bosch washers use BSH-specific components that are not interchangeable with Whirlpool, LG, Samsung, or other brands. Bosch parts must be ordered specifically for Bosch. The E-axis wash system, EcoSilence motor, and AquaStop system are proprietary Bosch designs.

Same Fix Works on These Brands

Bosch shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience HUB Errors

This repair applies to most Bosch washers with this error code. Common model numbers include:

WAW285H2UC, WAT28401UC, WGA12400UC, WFVC5400UC, WAP24201UC, WAS24460UC

Last verified for technical accuracy on March 15, 2026