Bosch Dishwasher E:26 (wiring at the spray diverter)

What E:26 means

E:26 is a quiet one. It is stored rather than shown during a wash, and a technician reads it back through the service test program. It logs a wiring problem linking the power module to the water switch, the diverter that picks which spray arm is fed. Bosch's documented repair is the cable run, not the diverter and not the board, which keeps the job modest if it is caught early.

Common causes of E:26

Cable between the diverter and the power module chafed through or broken
Plug at the diverter loose or corroded
Lead pinched during an earlier repair or reinstallation

✓ One safe check you can try

1. Do not open the machine; this code only shows in the problem memory. 2. Over the next few loads, compare the top and bottom racks. 3. Note whether one comes out consistently less clean. 4. Pass that on when you book. That is what an unsteerable diverter looks like in daily use.

! Why to stop there

Nothing at the front tells you which wire is damaged, and a guess can mean replacing the wrong part.
Harness repairs are done with the power off and the base removed, which is not a casual job.
Replacing the diverter or board first is far more costly than a repaired wire.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Dishwasher codes

2Bosch Dishwasher Service Test Result 2: Heating Group 4Bosch Dishwasher Service Test Result 4: Water Filling 8Bosch Dishwasher Service Test Result 8: Temperature Sensor 16Bosch Dishwasher Service Test Result 16: Spray Diverter E:30Bosch Dishwasher E:30, voltage too high and the machine shut down E:31Water in the zeolite container - Bosch Dishwasher E:31 FBosch Dishwasher F on an older display (water filling) 2HBosch Dishwasher 2H: Long Cycle Warning on Older Displays

E:26E:26 questions

Why does the code not appear on my display?

Bosch stores E:26 for service reading. The machine still runs, so you only notice uneven cleaning, and the code surfaces when we put it into the service test program.

Can I keep running the dishwasher until you come?

Yes, nothing about this code is a safety concern. Cleaning will be uneven, so expect to rewash a few items, but there is no leak or electrical hazard attached to it.

Is it a big repair?

Usually not. Because it is a wiring job, it tends to cost less than replacing a part. We confirm the cause first and give you the written price before touching anything.