Bosch Dishwasher error code
Bosch Dishwasher Error E28
AquaSensor (turbidity sensor) fault.
AquaSensor (turbidity sensor) fault.
Try these first
Start here before buying a part or taking the appliance apart.
- 1Check 1
Reset Dishwasher: Turn the appliance off and then on again.
- 2Check 2
Clean Filter: A dirty filter can affect the sensor's readings. Remove and clean the dishwasher filter.
- 3Check 3
Inspect Sensor: Unplug the dishwasher and locate the aqua/turbidity sensor in the sump area. Check for any debris or buildup and clean it.
A quick explanation
What does E28 mean?
AquaSensor (turbidity sensor) fault.
The answer you came for
How to fix Bosch dishwasher error E28
Start with the safest checks and work from simple to technical.
- 1
Step 1
1. Disconnect the dishwasher from power and water supplies for safety.
- 2
Step 2
2. Carefully pull the dishwasher out from under the counter to access its components.
- 3
Step 3
3. Locate the AquaSensor, which is usually found in the sump area at the bottom of the dishwasher tub.
- 4
Step 4
4. Disconnect the wiring harness attached to the old sensor.
- 5
Step 5
5. Remove the old sensor by twisting it counter-clockwise and pulling it out.
- 6
Step 6
6. Install the new AquaSensor by pushing it in and twisting it clockwise to lock it into place.
- 7
Step 7
7. Reconnect the wiring harness, slide the dishwasher back into place, and restore power and water.
Read the additional checks from the current guide
How to Fix E28 Error (Step-by-Step) Disconnect the dishwasher from power and water supplies for safety. Carefully pull the dishwasher out from under the counter to access its components. Locate the AquaSensor, which is usually found in the sump area at the bottom of the dishwasher tub. Disconnect the wiring harness attached to the old sensor and confirm the error stays cleared during a full test cycle. Remove the old sensor by twisting it counter-clockwise and pulling it out. Install the new AquaSensor by pushing it in and twisting it clockwise to lock it into place. Reconnect the wiring harness, slide the dishwasher back into place, and restore power and water. Turn the appliance off, wait about 2 minutes, then turn it back on. Next Steps and Parts Verified Compatible Alternatives: 00424099 00611317 Recommended Parts to Check No exact official OEM part number is listed here because the correct Bosch dishwasher part can vary by complete model number. These are targeted part-category searches, not universal fit claims. Bosch dishwasher water inlet valve Common replacement category: Water inlet valve Fit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for fill and water-supply faults after the tap, hose, and inlet screen are checked. Search Amazon for Bosch dishwasher water inlet valve Bosch dishwasher drain pump Common replacement category: Drain pump Fit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for drain and standing-water symptoms after the filter, sump, and hose are checked. Search Amazon for Bosch dishwasher drain pump Bosch dishwasher circulation pump Common replacement category: Circulation pump / wash motor Fit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for wash, spray-arm, and circulation symptoms after filters and spray arms are checked. Search Amazon for Bosch dishwasher circulation pump Before ordering: match the part to the complete Bosch dishwasher model number on the appliance tag. Still Not Working? If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
What may be causing it?
- Dirty or faulty aqua/turbidity sensor
- Clogged dishwasher filter
- Debris or buildup on the sensor
- Loose or damaged sensor wiring
These are possibilities to investigate, not proof that one part has failed.
Recommended part
Recommended part for this error code
Replacement part
OEM candidate: 00165279
Price noted in the current guide: $22-$38
Why this part is shown: It is associated with Bosch Dishwasher error E28 in the current guide. The error code alone does not prove this part has failed.
Compatibility varies by model. Confirm that the Amazon listing includes your complete dishwasher model number before ordering.
You can open the recommendation now. Check model compatibility on the Amazon page before purchasing.
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