Bosch Error Codes

Pick the code your Bosch appliance is showing. Each page explains what the code means, the most likely causes ranked by probability, and which fixes are safe to try before calling a technician.

Bosch Dishwasher Codes

• E15 Water reached the base pan under the tub and Bosch's leak protection locked the machine — sometimes a genuine leak, often a one-off spill or condensation that clears once the base dries.
• E24 The dishwasher can't drain properly — start with the filter, then the drain hose path, and don't skip checking that the drain pump cover is seated.
• E25 The drain pump itself is blocked or its cover is loose — and Bosch makes the pump cover owner-accessible, so this is one of the most fixable codes the brand throws.
• E09 The heating system isn't raising the water temperature — beyond one reset, the flow-through heater is a mains-voltage part that belongs to a technician.
• E14 The flow meter that counts water into the machine stopped making sense, so filling can't be trusted — a reset and supply check first, then it's a sensor-level repair.
• E17 Water is rushing in faster than the fill system expects — household pressure at the high end or an inlet valve not throttling properly are the leading explanations.
• E01 Bosch's control board has flagged a fault in the circuit that drives the heat pump motor — the part that both circulates and heats the water — so beyond a single power reset, E01 is a board-level repair for a technician.
• E02 A switching relay on the Bosch dishwasher's main control board is not behaving as the electronics expect — Bosch reports this as both E02 and E03 — so try one power reset, then it is a board-level repair.
• E04 During its power-on self-test the Bosch dishwasher found a fault in the heating electronics, so it shows E04 and holds back rather than energising the heater — a technician diagnosis after a single reset.
• E05 The circuit that runs the diverter — the valve that switches water between the upper and lower spray arms — has faulted on the Bosch control board, so after one reset E05 is a technician repair.
• E06 Bosch's E06 means the door-sensing circuit faulted — on most recent models the latch's reed switch cannot detect that the door is shut — so check the door closes firmly, reset once, then call a technician.
• E07 On Bosch dishwashers with CrystalDry, E07 means the zeolite drying fan motor has faulted — the fan that pushes warm air over the drying mineral — so after one reset it is a technician repair on those models.
• E12 E12 is not a breakdown — it is Bosch telling you limescale has built up in the heat pump and the dishwasher needs descaling, which you can do yourself with a dishwasher descaler.
• E18 Bosch's E18 means the dishwasher is not getting enough water — the level stayed too low — so check the inlet hose, the supply valve, and that water actually reaches the machine before calling for service.
• E19 E19 means the circuit that releases the Bosch detergent dispenser has faulted — the solenoid that pops the flap open mid-cycle — so clear any residue, reset once, then expect a technician repair.
• E22 E22 is one of the most fixable Bosch codes: the filter at the bottom of the tub is blocked and water is backing up in the sump, so cleaning the filter usually clears it.

Bosch Washer Codes

• E17 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 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 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 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 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 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.