Bosch Washer Error Codes — Complete List

Bosch washers report most faults as an E-code — E17, E18, E23 — with an F-code twin (F17, F18, F23) on other model years, and the number tells you where the wash stalled: the teens cover water coming in and draining out, E23 is the AquaStop leak guard, E32 an unbalanced spin, E33 too much foam. Each verified guide below opens with the checks Bosch itself lists — the tap, the hoses, the pump filter, the door — before anything that calls for a technician.

• E17 (F17, F29) Bosch's E17 — shown as F17 or F29 on some models — means the washer couldn't draw water quickly enough to fill, almost always because the inlet-hose filter screen is clogged, the tap isn't fully open, or household water pressure is low.
• E18 (F18) Bosch's E18 — the F18 display on some models — means the washer couldn't drain within the expected time, most often because the pump filter is clogged with lint and coins or the drain hose is kinked or pushed too far down the standpipe.
• E23 (F23) Bosch's E23 — F23 on some displays — means the washer's AquaStop leak protection detected water in the base tray and cut the machine off to stop a flood, sometimes from a genuine leak but often from overfoaming, a hose weep, or a spill during a move.
• E16 (F16, E34, F34) Bosch's E16 — displayed as E34, F16 or F34 on some models — means the door isn't locking, so the machine refuses to start, most often because a bit of laundry is caught in the seal or the door wasn't pushed until it clicked.
• E32 (F32) Bosch's E32 — F32 on some models — means the drum couldn't balance the load for the spin, so the machine slows or skips the high-speed spin to protect itself, usually because of a single bulky item or a tangled clump on one side.
• E33 (F33) Bosch's E33 — shown as F33 on some models — means the machine detected excessive foam, nearly always from too much detergent or the wrong (non-HE) type, which makes the wash slow down or pause while it deals with the suds.
• E80 Bosch's E80 flags a fault in the drive circuit — the power electronics that control the motor — which is an internal, mains-voltage fault the owner can't repair beyond a single power reset.
• H9E Bosch's H9E, usually shown with a water-tap symbol, means the washer isn't receiving hot water on models plumbed to a hot supply — typically because the hot tap is off, the hot hose is kinked, the strainer is clogged, or hot-water pressure is low.

Don't see your code?

Bosch has sold several washer generations in the US and the display differs between them: older machines spell out a short E- or F-code, while newer ones may show a code with a colon and a sub-number (like E:30 -10) or a letter code such as H9E. For anything not listed here, the error-code list in your model's manual — searchable by the number behind the door or on the back panel — is the authority, and note that these washer codes are separate from Bosch's dishwasher E-series.

Also from Bosch: Bosch dishwasher error codes