Bosch Washer error codes

The codes people search for most, what each one means and what to check first. Tap a code for causes and step-by-step checks.

CodeWhat it means
E18
F18
Drain blocked
The washer can't pump water out, usually because the drain hose or the pump is blocked or the hose is kinked.
E16
F16, E34, F34
Door not locked
The washer door didn't close or lock properly, so the cycle can't start.
E17
F17, F29
Water supply problem
Water isn't coming in fast enough, usually because of blocked inlet filters or low water pressure.
E23
F23
Water in base (AquaStop)
Water has been detected in the base of the washer, which means a leak, so the AquaStop protection has been activated.
E32
F32
Unbalanced load
The washer detected an imbalance in the drum and couldn't spin at full speed.
E33
F33
Too much foam
The washer detected too much detergent foam in the drum.

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