What Does Error Code E25 Mean?

Error E25 on your Bosch Dishwasher means: Bosch Dishwasher error code E25 indicates that the drain pump impeller is blocked, causing water to accumulate in the dishwasher. This can lead to poor washing performance, increased energy consumption, and potentially damage the appliance's internal components. If left unchecked, a blocked drain pump impeller can cause the dishwasher to overheat, resulting in costly repairs.

What You'll Need

🔧 Tools

Phillips
Torx T20 screwdriver
Multimeter
Drain snake (optional)

🛒 Parts

Drain pump impeller

How to Fix Error E25 — Step by Step

1

Reset and Power Cycle

Begin by unplugging the dishwasher from the power outlet and waiting for 30 seconds. This will reset the appliance's electronic controls. Next, plug the dishwasher back in and press the 'Start' button to initiate a power cycle. This will help clear any temporary faults that may be causing the error code. Wait for the power cycle to complete before proceeding.
2

Check the Drain Pump Impeller

Locate the drain pump impeller, which is usually located at the bottom of the dishwasher. Remove the lower panel by using a Phillips #2 screwdriver to remove the screws. Once the panel is removed, inspect the drain pump impeller for any blockages or debris. Use a Torx T20 screwdriver to remove any screws holding the impeller in place. Gently pull the impeller out and inspect it for any signs of damage or blockage.
3

Clear Blockages

If the drain pump impeller is blocked, use a drain snake to clear any debris or blockages. Insert the drain snake into the drain hose and rotate it slowly to clear any obstructions. If the blockage is severe, you may need to use a more powerful cleaning tool, such as a drain auger.
4

Inspect and Clean the Drain Hose

Inspect the drain hose for any kinks, twists, or blockages. Use a multimeter to check the hose for any signs of damage or corrosion. If the hose is damaged, replace it with a new one. Clean the drain hose by running hot water through it and using a soft-bristled brush to remove any debris or blockages.
5

Replace the Drain Pump Impeller

If the drain pump impeller is damaged or blocked beyond repair, replace it with a new one. Make sure to purchase a genuine Bosch part or a high-quality aftermarket replacement. Follow the manufacturer's instructions for installation and replacement.

When to Call a Professional

If you are unsure about how to diagnose or repair the issue, or if the problem persists after attempting the above steps, book a service appointment with a certified repair company. They have the right equipment to diagnose and repair the issue, and ensure that the appliance is functioning safely and efficiently.

Field note: E25 means the machine did not see a drain complete — it is not a default control-board part. On Bosch Dishwashers start at the filter/sump, high-loop / height of the drain hose, and the impeller. A crushed hose or a coin on the impeller looks identical to a ‘bad pump’ on a scan tool.

What this code is not

Not ‘replace the board because it will not empty.’
Not a water-inlet problem (that is a fill code).
A missing high loop that siphons, or a disposer knockout still in place, will retrip E25 after any new pump.

Bosch Dishwasher error code E25 is a red flag that your appliance is struggling to drain water properly. You might notice water pooling at the bottom of the dishwasher, a gurgling sound during cycles, or the machine failing to complete washes. The blinking E25 light isn’t just an inconvenience—it signals a blocked drain pump impeller, which can lead to costly damage if ignored. Below, I’ll walk you through diagnosing and fixing this issue with the same precision I’ve used to repair thousands of Bosch dishwashers.

## Root Causes (Ranked by Likelihood)

Rank	Cause	How to Verify	Fix Difficulty	Estimated Cost
1	Clogged drain pump impeller	Debris visible in pump housing	Medium	$20–$50 (parts)
2	Kinked or clogged drain hose	Hose is bent or has buildup	Easy	Free (DIY)
3	Faulty drain pump motor	Pump runs but doesn’t spin impeller	Medium	$100–$200 (parts + labor)
4	Incorrect drain hose installation	Hose is too high or siphoning improperly	Easy	Free (DIY)
5	Foreign object in drain line	Small items (e.g., bottle caps) stuck in pump	Medium	$50–$100 (labor)

### 1. Clogged Drain Pump Impeller

Why it happens: Food particles, grease, or hard water minerals accumulate over time.
How to verify: Remove the pump cover and inspect the impeller for blockages. Use a flashlight to peer into the pump housing.
Fix difficulty: Medium (requires Torx screwdriver).

### 2. Kinked Drain Hose

Why it happens: Improper installation or shifting during use.
How to verify: Follow the hose from the dishwasher to the sink. Check for bends or debris in the line.
Fix difficulty: Easy (unplug and reposition the hose).

### 3. Faulty Drain Pump Motor

Why it happens: Motors can fail due to overheating from prolonged blockages.
How to verify: Use a multimeter to test for continuity. A failed motor will show infinite resistance.
Fix difficulty: Medium (requires replacing the entire pump assembly).

## Model-Specific Differences

Affected models:

Bosch 800 Series (2015–2020)
Bosch 500 Series (2018–2022)
Bosch 400 Series (2020–2023)

Key variations:

Pre-2018 models: Drain pumps are often located behind the lower rack, requiring full rack removal.
Post-2020 models: Bosch introduced self-cleaning impellers with anti-clog coatings—less prone to E25 but not immune.
Firmware updates: Bosch released a 2022 update for certain models to improve E25 detection accuracy. Check for updates via the Bosch Home App.

Recall note:
No active recalls for E25-related issues as of 2024. If your model is 10+ years old, consider replacement over repair.

## Repair Cost Breakdown

Repair Type	DIY Cost	Professional Cost	Notes
Clearing impeller	$0–$20 (parts)	$75–$150 (labor)	Includes drain snake or replacement impeller.
Replacing drain pump	$50–$100	$150–$300	Required if motor is damaged (see related error E24).
Full drain system overhaul	$100+	$300–$500	For severe clogs or multiple failed repairs.

When to replace instead of repair:

If the dishwasher is over 8 years old and repair costs exceed $200.
If E25 recurs after multiple fixes.

Warranty coverage:

Bosch dishwashers typically have a 1-year parts and labor warranty.
Contact Bosch support at 1-800-944-2904 for coverage details.

## Prevention & Maintenance

3 actions to avoid E25:

Clean the filter weekly: Locate the filter under the lower rack and rinse it under hot water.
Use rinse aid: This reduces mineral buildup in the drain system.
Run hot water before cycles: Ensure the drain line is clear by running the kitchen sink for 20 seconds before starting a wash.

Maintenance schedule:

Monthly: Inspect the drain hose for kinks.
Annually: Run a vinegar cycle (1 cup white vinegar in a glass bowl on the top rack) to dissolve internal buildup.

## When to Call a Professional

Call a technician if:

You find a foreign object (e.g., a coin) stuck in the impeller.
The drain pump motor makes a loud grinding noise.
E25 returns after clearing the impeller.

What to expect:

A technician will test the pump motor with a multimeter and inspect the entire drain line.
Average cost: $150–$300 for parts and labor.
Timeline: 1–2 hours, depending on parts availability.

Find a qualified tech:

Use Bosch’s authorized service locator.
For urgent repairs, try Appliance Medic or Mr. Appliance.

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