E26
Bosch Washing Machine
Severity: ModerateWhat Does This Error Mean?
The E26 error on your Bosch washer means the pressure sensor that monitors water level has detected an abnormal reading. The washer uses this sensor to know how much water is in the drum. When the reading is out of range, the machine stops to prevent overfilling or running without enough water.
Affected Models
- Bosch 300 Series
- Bosch 500 Series
- Bosch 800 Series
- Most Bosch front-load washers
Common Causes
- The pressure hose connecting the sensor to the drum is kinked, cracked, or blocked
- The pressure sensor itself has failed or become faulty
- Detergent foam has built up and blocked the pressure sensor port
- A wiring fault between the pressure sensor and the control board
- The control board is not interpreting the pressure sensor signal correctly
How to Fix It
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Unplug the washer from the wall. Wait two minutes, then plug it back in and try a fresh cycle.
A control board reset sometimes clears a temporary E26 caused by a minor sensor glitch.
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Run a drum clean or hot wash cycle. Excessive detergent foam can block the pressure sensor port.
Use a drum cleaning tablet or run an empty cycle at the highest temperature with no detergent.
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Locate the thin plastic pressure hose that runs from the drum to the pressure sensor. Inspect it for kinks, cracks, or blockages.
On most Bosch front-loaders, you need to remove the top panel to access this hose.
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Disconnect the pressure hose from the sensor and gently blow through it to check for blockages. Reattach it securely.
A clogged hose is a very common and easy fix — often caused by detergent residue.
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If the hose is clear and the error persists, the pressure sensor likely needs replacement. Contact Bosch service or an appliance repair technician.
The pressure sensor is a relatively small part but requires accessing the back of the drum area.
When to Call a Professional
If cleaning the pressure hose and resetting the washer does not clear E26, a technician should test the sensor with a diagnostic tool. Replacing the pressure sensor typically costs $120–$220 including labor. Do not continue running the washer — it may overfill or run dry.
Frequently Asked Questions
Can too much detergent cause E26?
Yes. Using too much detergent, or the wrong type of detergent, creates excess foam. This foam can block the small port that connects the pressure hose to the drum. Always use HE (High Efficiency) detergent in Bosch washers and use the recommended amount.
Is it safe to keep using my washer with E26?
No — stop using it until you fix the problem. A faulty pressure sensor means the machine cannot accurately control the water level. This can lead to overfilling (water leaking out) or running a cycle with too little water and damaging your clothes.
How long does it take to replace a Bosch washer pressure sensor?
A technician can typically replace the pressure sensor in 45–90 minutes. The part itself usually costs $30–$60. Labor adds another $80–$150 depending on your area.