Bosch Dishwasher Error Codes, Decoded

They're both drain faults but different parts, and Bosch's own wording separates them. E24 means the drain route or filter is blocked — a clogged filter, a kinked or blocked drain hose, or a blocked siphon connection (Bosch's page frames it as 'drain filter clogged and not draining'). E25 means the drain pump itself is the problem — debris jamming the impeller (glass, seeds, a stray label) or a loose or missing pump cover. So E24 = clear the path, E25 = check the pump and its cover. The full step-by-step drain walkthrough for both lives on our Bosch dishwasher not-draining page; this page tells you which code points where. $89 residential diagnostic, waived with repair.

E15 is Bosch's most common service code: the AquaStop leak protection detected water in the base pan and shut off the water intake. To clear it, tip the machine back over towels or a shallow pan so the base-pan water pours out the front (the pan has no drain), which drops the foam float, then hard-reset by cutting power at the breaker for about 5 minutes. Important: the code will come right back unless the underlying leak — door seal, inlet valve, a hose, or the sump — is found and repaired. Because E15 is its own deep topic, we have a dedicated Bosch E15 page that walks the whole thing.

Because E01 through E09 are Bosch service/technician diagnostic codes, not the consumer self-help codes. They're real and used in Bosch service literature — E01 is a control-board/heating-relay fault, E02 an NTC temperature sensor, E06 a door switch, E09 a heater circuit — but Bosch doesn't publish them on its customer-facing self-help site, which is why you won't find them in your owner's booklet. If your machine is showing an E0-series code, it's pointing at internal hardware and it's a technician diagnosis. We carry the common Bosch boards, sensors, and door latches.

Fill side. E18 means water isn't being drawn in correctly — the level is too low or inflow is insufficient. Bosch says to check for a kinked supply hose, blocked AquaStop or inlet filters, and low water pressure (Bosch wants roughly 10 liters/minute from a fully open tap). E16 and E17 are the opposite — unwanted or uncontrolled water inflow, an inlet valve that isn't closing. For E18, open the tap fully, straighten the supply hose, and clean the inlet screens; if it persists it's the inlet valve or flow path. Inlet-side repairs run $200 to $380.

E14 is the flow-meter (Reed switch) fault on Bosch's consumer-facing codes — a fault in the flow-sensing part of the fill system. E04 is the same idea in Bosch's internal service literature, but the code you'll actually see documented for owners is E14. Either way it's a fill/flow-sensing issue, and it's a technician diagnosis because it involves the flow meter and inlet path. Don't chase E04 in your owner's booklet — look for E14.

Yes. Thermador dishwashers share the Bosch platform (both are BSH Home Appliances brands), so the E-code system carries across — E15 leak, E24/E25 drain, E18 fill, and the rest mean the same things and use the same part families. If you have a Thermador flashing an E-code, this page applies, and our techs treat Bosch and Thermador as one platform for diagnosis and parts.

Close but not identical. E22 is a filter-blocked / residual-water-in-the-sump fault — water isn't clearing from the sump, usually because the filter is clogged. E24 is broader drain-route blockage (filter plus hose and siphon). In practice both send you to the same first step — clean the filter cylinder at the tub bottom — but E22 is more specifically the filter and sump, while E24 covers the whole drain path. E22 often clears with a filter clean and a $89 diagnostic; if the drain path is genuinely blocked further down, that's the not-draining walkthrough.

For most codes: cut power at the breaker (or unplug) for about 5 minutes, restore, and run a short cycle to see if it returns. For fill and drain codes, fix the obvious cause first (open the tap, clean the filter, clear the hose). E15 additionally needs the base pan drained (tip-and-pour) because of the float. Codes that return immediately after a reset — E01-E09 service codes, E14 flow meter, E25 pump, a persistent E15 — mean a real hardware fault and a service visit. Bosch dishwashers don't have a customer 'clear all codes' shortcut beyond the power cycle.

90 days on SDAR labor and parts for the work we perform — separate from any Bosch factory warranty. Same component fails inside 90 days, we replace it free. BHGS #A49573, BBB Accredited Business, EPA 608 Universal certified #1346255700410. $89 residential diagnostic, waived when you approve the repair.