Bosch dishwasher fault codes
Bosch dishwashers show faults as an E code, and the same fault looks different depending on how old your machine is — E:15, E:31-00 and E:3100 are one code, not three. Siemens and Neff machines are the same appliances under different badges and use the same numbering, which we have checked against their own manuals rather than assumed. On dishwashers that sharing is unusually complete: the Neff manuals do not merely agree with the Bosch ones, they use the same sentences. What differs between the three badges is not the codes but how much of the code set each one publishes and where, and that is worth knowing before you trust a page with the wrong badge on it. Where Bosch publish steps for an owner we give them; where Bosch publish none, we say so rather than inventing some.
Where the code shows on a Bosch
There are four generations of display and they render the same fault differently. Oldest machines have no numeric display at all and signal by indicator lamp — a steady "check water supply" light covers the whole inlet and drainage family, while the same light flashing means a technical fault, and a flashing salt light means the heating element has furred up. Then came two-digit codes with a colon: E:15, E:24, E:18. Current UK machines, including most Series 4, show alternating pairs — the manual describes E:31-00 as lighting up alternately, so the display flicks between E:31 and 00. Newest machines with a text display show it as one four-digit string, E:3100. The mapping is: E:12 is E:20-60 is E:2060; E:14 is E:30-00; E:15 is E:31-00 is E:3100; E:16 is E:34-00; E:18 is E:32-00; E:22 is E:92-40; E:24 is E:61-03; E:25 is E:61-02; E:27 is E:90-01. Note that E:24 and E:25 cross over in the long form and are easy to get backwards, and the Neff manuals confirm that pairing independently, which is the best evidence available that the corpus has it the right way round. Siemens also confirm that E and F prefixes are the same fault, so F15 is E15. One last thing about where these codes are published rather than where they are displayed, because it decides which source to believe. The manuals are the authority: the Bosch GB manual and the two Neff manuals carry the same short fault table, roughly ten codes plus a catch-all covering everything from E:01 to E:30. Neff UK publish no error-code page at all, so for a UK Neff owner the manual is the only source there is; Neff’s Austrian site does carry short E15 and E24 pages, in German, and they use the same sentences as Bosch and Siemens. Siemens do publish a web page, and it lists far more codes than any manual — but there is no UK version of it, the English-language one is the Republic of Ireland page, it contradicts the manuals on E14, and its entry for E24 and E25, the commonest dishwasher fault of all, is completely blank. Bosch’s own UK web pages are thinner than their manual and in at least one place disagree with it. Where a website and a manual differ on these machines, this site follows the manual and says that it is doing so.
How to reset a Bosch
Bosch publish one reset and attach it only to the catch-all "a technical fault is present" entry: press off, unplug or switch off the fuse, wait at least two minutes, restore power and switch on. They deliberately do not offer it for the water protection codes. If it recurs, their instruction is to turn off the water tap, pull out the mains plug and contact customer service quoting the code.
Most common Bosch faults
The Bosch codes people look up most.
- E15Stop — call an engineerThe water protection system has activated — there is water in the base of the machine. Turn the tap off and call service. Do not tilt it, whatever else you read.
- E24Get it checkedThe machine cannot drain. Bosch publish a full owner procedure for this one, and two warnings about doing it that their UK page leaves out.
- E18Get it checkedWater is not getting in. Bosch publish a full owner procedure including a flow rate you can measure with a jug.
- E22Get it checkedThe filters are soiled or blocked. Bosch give a one-line remedy — clean them — and it is genuinely the whole job.
Every Bosch fault code
7 published codes. Filtering happens in the page — every one is in the HTML.
Showing 7 of 7 codes
Bosch models
Codes can differ between generations. Check yours.
Guides that help with Bosch faults
How to reset a dishwasher, and why most codes have no reset
On a dishwasher, "reset" usually means cancel the programme. What each manufacturer actually offers, and the codes they deliberately give no reset for.Read the guideDishwasher not draining or not filling: what to check
Drain and fill codes are the biggest cluster in the category, and most end for nothing. The checks the manufacturers publish, in order, and where they stop.Read the guideDishwasher leak and flood codes: what to do right now
Every dishwasher code rated dangerous here means water where it should not be. What the machine is doing, what to do in the next two minutes, and what not to.Read the guide
Looking for Bosch’s own support? www.bosch-home.co.uk. We are not affiliated with Bosch.