E92-40 almost always appears after someone replaced a Bosch control board with a non-programmed or wrong-configuration board. Bosch control boards require model-specific programming - an unprogrammed board will throw E92-40 immediately. If you replaced a board and now have E92-40, the new board needs to be flashed with the correct firmware for your model number.
I've gotten probably 30 calls about E92-40 in the last year alone, and honestly 29 of them were after a DIY board swap. The thing is, your dishwasher won't budge until that board knows what model it's talking to. Ignore it and the machine just sits there dead. It's not a mechanical failure, it's basically a blank-brain problem, and you can't fix it with a reset or a power cycle.
Torx T20 screwdriver (main control board mounting screws), Phillips #2 screwdriver (door panel screws on most models)
What Does the E92-40 Code Mean?
OK so here's the deal with E92-40. Bosch treats each dishwasher model like it has its own identity, and the control board has to match that identity exactly. Buy an OEM board from Bosch, buy an aftermarket board online, doesn't matter. If nobody programmed that board for your specific model number, it's basically useless right out of the box. This is probably the most avoidable service call I go on, and it happens constantly.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Replacement control board installed without programming40%
Aftermarket board with wrong firmware version24%
Firmware corruption from power surge during operation22%
Board replaced with used unit from a different model14%
Symptoms You May Notice
The machine is completely dead right after you snapped in the new board. Buttons do nothing, display shows E92-40 and just sits there staring at you.
You hit the power button and it beeps once, flashes E92-40, then goes dark. Every single time, no variation.
None of the wash cycle buttons do anything, like you're pressing a wall instead of a control panel.
The display might scroll through some diagnostic codes or show dashes before landing on E92-40 on startup.
No water fills, nothing drains, no motor sounds at all. The board refuses to initialize any functions whatsoever.
Can you reset a Bosch dishwasher to clear the E92-40 code?
E92-40 won't clear with a standard reset, period. You can unplug the machine for 10 minutes, hold the Start button, do whatever reset trick you found online, and it'll still show E92-40 when it comes back. The board has to be programmed with the correct configuration data for your model first. Once that's done, the error clears itself on the next startup.
Tools Required for Diagnosis
Torx T20 screwdriver (main control board mounting screws)Phillips #2 screwdriver (door panel screws on most models)Flathead screwdriver (for prying plastic door panel clips)Needle-nose pliers (for carefully disconnecting the ribbon cable connector)
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
Replacement Parts
If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.
Part Name
OEM Number
Estimated Price
Main Control Board (pre-programmed)00708350 · $150–$300
00708350
$150 – $300
Frequently Asked Questions
E92-40 after replacing the control board - what went wrong?
The board you put in is blank. Or close to it. Here's what happens: Bosch builds boards in batches and doesn't program each one for a specific model until it goes through official channels or a tech does it on-site. So when you buy a board online and drop it in, the dishwasher fires up and goes 'who are you?' The main board and UI board try to handshake and there's no matching configuration data. E92-40 is the result. The board itself is probably fine. It's just got nothing to say yet.
Does the new Bosch board need programming?
Yeah, almost definitely. I'd say 90% of boards ordered through Amazon, eBay, or even some parts sites ship unprogrammed. Bosch authorized dealers sometimes pre-program them if you provide the model number upfront, but you have to specifically ask. The safest move is to call whatever seller you're buying from and say 'I need this programmed for model [your number] before you ship it.' Some will do it, some won't. But asking that one question saves you an extra $80 to $150 service call when it arrives blank.
Where can I get a Bosch board programmed?
Three options. Call Bosch direct at 1-800-944-2904 and ask for a factory service appointment. Or find a local appliance repair shop and ask specifically if they have BSH programming equipment or BSH Service Wizard software. A lot of shops don't have it, so call ahead before you drive over with the board. Third option, and honestly my favorite, is finding a board reseller online who offers programming as an add-on when you order. Usually cheapest and you get the board ready to drop in.
Can I program the board myself?
Nope. Not for real, anyway. You need the BSH Service Wizard software and a proprietary interface cable that Bosch doesn't sell to consumers. I've seen people try those sketchy DIY firmware flash kits you find online, and it always ends the same way: permanently dead board. Like, not recoverable. The $80 to $150 to have a certified tech do it is genuinely cheaper than buying a second board because you fried the first one chasing a shortcut.
How much does board programming cost?
Straight programming only, figure $80 to $150. Some techs charge less if you bring the board to them instead of having them come to your house. If the tech also installs it, add another $50 to $100 depending on your area. The cheapest route I've seen is ordering through a reseller who programs it for your model at no extra cost when you buy. I usually tell people to ask about that before they even place the order. Saves money and headaches.
What if E92-40 shows up and I never touched the board?
That's less common but it happens. Usually means the ribbon cable between the main board and UI board came loose or got damaged. Check that connection first. If the ribbon looks fine and the machine just randomly started showing E92-40 after a power outage, there's a chance the firmware got corrupted. That still requires Bosch service to fix, but at least you know the board itself might be salvageable instead of needing a full replacement.