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ErrBase

Bosch Dishwasher Flashing Lights: Troubleshooting Guide

Quick Answer

Most Bosch dishwasher flashing issues are caused by an unlatched door or a cycle that was interrupted. Try holding the Start button for three seconds to reset the system and then ensure the door is firmly clicked shut. If a 'Tap' icon is flashing, check for water in the base pan.

In my experience, flashing lights on a Bosch are almost always a door latch talking to the control board, and it's usually something dumb like a rack that's sitting crooked. It's almost never a dead board. I've seen maybe five actual board failures cause this in 15 years. But if you're also seeing that Tap icon flashing, that's a whole different deal. That means the leak sensor tripped and there's water in the base.

BoschDishwasherSeverity: moderateDifficulty: easy92% DIY Success
Time to Fix
5–45 min
Difficulty
easy
Parts Cost
$12 – $85
Tools Needed
Torx T20 screwdriver, Phillips #2 screwdriver

What Does the FLASHING Code Mean?

OK so don't panic when you see the lights blinking. These Bosch units are actually designed to flash when they hit a safety or logic conflict, it's a feature not a bug. The fix is usually free and takes five minutes. Most of the time it's the door latch, a rack out of position, or just needing a reset after a power blip. Honestly, I've fixed dozens of these without replacing a single part.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Door not latched properly55%
Cycle interrupted/Reset needed25%
Water in base pan (E15)12%
Faulty door latch switch6%
Control board failure2%

Symptoms You May Notice

  • All the program indicator lights are blinking at the same time and the machine won't start no matter what you press
  • A red light beam is flashing on the kitchen floor from the InfoLight projector under the door, instead of shining steady
  • You can hear the drain pump running constantly even though nothing's being washed and the tub looks empty
  • The Clean light and the Rinse Aid indicator are both flashing at the same time, which is the machine's way of saying something's wrong with the cycle state
  • Machine beeps three times when you close the door and then just sits there with lights blinking, never actually starting

Can you reset a Bosch dishwasher to clear the FLASHING code?

Press and hold the Start button for 3 seconds until the display shows 0:01. Close the door right away and let the machine run its one-minute drain cycle. Don't open it during this. When it stops, the display should go blank or show the Clean indicator. On models without a display, hold Start until the Active light goes solid or turns off. Then start a brand new cycle.

Tools Required for Diagnosis

Torx T20 screwdriverPhillips #2 screwdriverFlashlightTowels or old rags for leak checkingMultimeter (if testing the latch microswitch)

Service / Diagnostic Mode

With the door open, hold the 'B' and 'C' buttons while pressing the 'Power' button. Release all buttons. The display should show P0 or a similar code to indicate service mode entry.

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
Door Latch Assembly00630633 · $45–$85
Door Strike Plate00611451 · $12–$25

Frequently Asked Questions

Why is my Bosch dishwasher light flashing on the floor?
That red light on the floor is the InfoLight, it's basically Bosch's way of letting you know the machine is running without you having to open the door to check. If it's solid, the machine's just doing its thing. If it's flashing, that usually means the door got opened mid-cycle or there's an active error. Close the door firmly and give it a few seconds. If the flashing doesn't stop, look at the display inside for an error code like E15 or E24 so you know what you're actually dealing with.
How do I stop the flashing 'Active' light?
A flashing Active light almost always means the door isn't fully latched or the cycle got paused. Here's the thing: on Bosch dishwashers you need to press Start first and then close the door within about 4 seconds. If you close it too slowly, the machine just goes back to flashing. Try pressing Start and then immediately pushing the door shut in one smooth motion. You should feel and hear that click. If it still flashes, do the 3-second Start button reset and start completely fresh.
Does a flashing light mean the control board is dead?
Honestly? Almost never. In 15 years I've seen maybe five cases where flashing lights were actually caused by a dead control board. It's almost always the door latch, a rack blocking the door, or the E15 leak sensor doing its job. Don't buy a $150 board until you've checked those things first. A latch assembly runs about $30 to $45 and takes 20 minutes to swap. Start there. You'll save yourself a lot of money and a lot of frustration.
Why does my Bosch dishwasher flash 0:01?
That's actually normal and means the reset is working. The 0:01 is a short drain cycle that clears whatever the machine was stuck on. You need to close the door right away and let it run that full minute without opening it. When it finishes, the display will go blank or show Clean and you're good to go. Start a brand new cycle, don't try to resume the old one.
Can I just run my Bosch dishwasher while the lights are flashing?
Nope. Flashing lights mean the machine's locked out, it won't start a wash cycle in that state no matter what. And honestly, don't just keep hammering the Start button hoping something changes. Do the 3-second reset first. If it still won't run, you've got a real underlying issue to fix, whether that's a bad latch switch, a shifted strike plate, or water in the base pan. Running it with an active E15 code can actually make a leak worse, so don't try to force it.

Models Known to Experience FLASHING Errors

This repair applies to most Bosch dishwashers with this error code. Common model numbers include:

SHEM63W55N, SHXM78Z55N, SHP865ZD5N, SHE3AR72UC, SHX878ZD5N, SHPM88Z75N, SHXM4AY55N, SHEM3AY55N

MS

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on May 10, 2025