Common Bosch dishwasher problems in 2026 and what to check first
David Collins, appliance service expert | October 27, 2026 | Dishwasher repair
Bosch builds some of the most reliable dishwashers on the market. Still, no appliance runs forever without a hiccup. The good news is that many Bosch problems have a simple cause. You can often fix them in a few minutes.
This guide covers the most common Bosch dishwasher problems in 2026. For each one, we show you what to check first before you call for help. We also explain the error codes you may see on the display. Everything here is written in plain terms, not technical jargon.
When a quick check does not solve it, we are ready to step in. Our certified technicians know Bosch models inside and out, and we carry common parts. We serve homes across Metro Atlanta. Book dishwasher repair with Appliance Tech Pros and get back to clean dishes fast.
Key takeaways
- A little standing water in the base is normal on a Bosch. A full pool of water is not.
- Most Bosch models dry by condensation, not an exposed heating element. Rinse aid is a must for dry dishes.
- If your Bosch will not start, check the door latch and the child lock first.
- The E15 code means water reached the base and the leak guard shut the unit down.
- Most problems start with a clogged filter, a kinked hose, or a simple setting.
Why Bosch dishwashers work a little differently
Bosch units have a few features that surprise new owners. Knowing them helps you tell a real fault from normal behavior. This saves you a worried phone call.
First, most Bosch models use condensation drying. There is no exposed heating element at the bottom. The machine dries dishes with heat left over from the final rinse, and 800 Series and Benchmark models add CrystalDry for extra drying power. Second, most models have AquaStop, a leak guard that shuts off water if it senses a problem. Third, many run so quietly that a beam of light on the floor, called InfoLight, tells you the cycle is still going. The official Bosch troubleshooting guide explains these features in more detail.
Common Bosch dishwasher problems at a glance
The table below lists the problems we see most often. It also shows the first thing to check. We explain each one below.
| Problem | What to check first |
|---|---|
| Not draining | Clean the filter and check the drain hose |
| Not drying | Add rinse aid and use the right cycle |
| Will not start | Latch the door and check the child lock |
| Leaking or E15 | Look for suds, a bad seal, or overfilling |
| Not cleaning | Clear the filter and the spray arms |
1. Bosch dishwasher not draining
Water left in the tub is the most common complaint. First, know that a small amount of water in the base is normal. It keeps the seals from drying out. A full pool of dirty water is the real problem.
Start with the filter. Twist out the cylinder filter at the bottom and rinse it clean. Next, check the drain hose behind the unit for kinks or clogs. If you just installed the dishwasher, check that the garbage disposal knockout plug was removed. These three checks solve most drainage problems.
2. Bosch dishwasher not drying dishes
Wet dishes confuse many Bosch owners. Remember that Bosch dries with residual heat, not an exposed hot element. So a few steps make a big difference. Skip them and your dishes stay damp.
Fill the rinse aid dispenser first, since condensation drying depends on it. Then choose a cycle with more heat, like Auto or Sanitize. Do not open the door right at the end, as the dishes need time to finish. Note that plastic items often stay wet, and that is normal even on a perfect unit. The ENERGY STAR dishwasher guide has more on efficient drying.
3. Bosch dishwasher will not start
A Bosch that will not start is usually not broken. Most of the time, a small thing blocks it. Work through these checks in order.
First, push the door until it clicks fully shut. The unit will not run with the door ajar. Second, check the child lock, since an active lock stops all buttons. Hold the lock button for a few seconds to turn it off. Finally, confirm the power at the breaker and make sure no delay start timer is set.
4. Bosch dishwasher leaking or showing E15
A leak is a serious sign, and Bosch takes it seriously too. The E15 code means water reached the base pan. The AquaStop guard then shut the unit down to prevent a flood. The machine will not run until the base is dry.
Check a few things first. Too much detergent or the wrong type creates heavy suds that overflow. A worn door seal or a loose spray arm can also leak. If you find standing water in the base, the unit needs to drain and dry out. A hidden leak often needs a professional to trace, so call our Bosch repair team.
Still seeing E15 or a leak? Our team handles Bosch appliance repair across Metro Atlanta. Have a question? Call us at (770) 501-4267.
5. Bosch dishwasher not cleaning dishes
Dirty dishes after a full cycle point to a blockage. The water cannot reach the dishes the way it should. A few quick checks usually fix it.
Clean the filter first, since a clogged filter recirculates dirty water. Next, spin the spray arms by hand and clear any blocked holes with a toothpick. Do not load tall pots where they block the arms. Use a quality detergent, and descale the unit if you have hard water. Overloading is the most common reason dishes come out dirty.
Bosch dishwasher error codes and what they mean
Bosch shows a code when it senses a fault. The table below covers the codes we see most. It also lists the first thing to check.
| Code | What it means | What to check first |
|---|---|---|
| E15 | Water in the base, leak guard on | Drain the base, look for a leak |
| E22 | Filter or drain blocked | Clean the filter |
| E24 | Water not draining | Check the drain hose for clogs |
| E25 | Drain pump blocked | Clear the pump cover of debris |
| E09 | Heating element fault | Call a technician |
For the full list, see the official Bosch error code guide. A single code that clears after a check is usually minor. A code that returns means a part has likely failed.
When to call a professional
Many Bosch problems are safe to fix at home. Cleaning the filter, adding rinse aid, and checking the door all take minutes. These steps solve the most common complaints.
Some signs need a trained hand right away. A returning E15 leak, a heating fault, or a burning smell all point to a deeper issue. If you ever notice a burning odor, stop the unit and read our guide on appliance burning smells. Our technicians diagnose the real cause and fix it in one visit across Metro Atlanta.
FAQ
Why is there water in the bottom of my Bosch dishwasher?
A small amount of water in the base is normal and protects the seals. A large pool means a drain problem, so clean the filter and check the hose.
Why are my dishes still wet in a Bosch dishwasher?
Bosch dries with residual heat, so rinse aid is essential. Add rinse aid, pick a hotter cycle, and let the dishes sit before opening the door.
What does E15 mean on a Bosch dishwasher?
It means water reached the base and the leak guard shut the unit off. Drain and dry the base, then look for the source of the leak.
Why won’t my Bosch dishwasher start?
Check that the door is latched and the child lock is off. Then confirm the power and make sure no delay timer is set.
Are Bosch dishwashers reliable?
Yes. Bosch ranks among the most reliable brands. Most problems come from a clogged filter or a simple setting, not a major fault.
Get your Bosch dishwasher running again
Most Bosch dishwasher problems trace back to a few simple causes. Start with the filter, the rinse aid, the door, and the spray arms. These quick checks solve the majority of issues. The error codes then point you to anything deeper.
When a problem will not clear, we are here to help. Our team keeps Bosch dishwashers running their best across Metro Atlanta. Book dishwasher repair with Appliance Tech Pros today.
