DIY Error Codes

Bosch dishwasher error E:92

Spray arm blocked / filters blocked

E:92-10: rearrange dishes and refit the lower spray arm. E:92-40: clean the filters.

Switch the dishwasher off before cleaning filters or spray arms.
Why
Bosch (p.4): "All repairs must be performed by an authorized service provider using only original equipment factory replacement parts." Bosch (p.5): "Do not tamper with or override controls and interlocks."

Fix it step by step

Step 1 of 5

  1. E:92-10: rearrange the dishware

    • 3 min
    • None
    • DIY

    Nothing should stop the lower spray arm turning.

    Why & details

    E:92-10: rearrange the dishware.

    Bosch, E:92-10 (p.29): "Arrange the dishware so that it does not obstruct spray arm rotation of the lower spray arm."

    Did the code clear?

  2. E:92-10: refit the lower spray arm

    • 5 min
    • None
    • DIY

    Set it at 6 o'clock and push down until it clicks.

    Why & details

    E:92-10: refit the lower spray arm.

    Bosch, E:92-10 (p.29): "Fit the lower spray arm correctly." Bosch, Cleaning spray arms (p.26): "Reinsert the lower spray arm by first setting it in the 6 o'clock position, then push down until it clicks."

    Did the code clear?

  3. E:92-40: clean the filters

    • 15 min
    • None
    • Caution

    Safety: Switch the dishwasher off before cleaning filters or spray arms. Remove sharp items from the lower rack first.

    Remove the filter system, rinse it, reassemble.

    Why & details

    E:92-40: clean the filters.

    Bosch, Cleaning filters (p.25): rotate the spray arm out of the way; "Turn the coarse filter counterclockwise and remove the filter system. Make sure that no foreign objects fall into the sump." Pull down the micro filter, press the locking catches together and lift the coarse filter out. "Clean the filter elements under running water." Reassemble, making sure the locking catches click into position, then (p.26) insert the filter system and turn the coarse filter clockwise so the arrow markings match up.

    Did the code clear?

  4. Another code appears

    • 5 min
    • None
    • Caution

    Safety: Switch the dishwasher off before cleaning filters or spray arms. Use the plug or breaker.

    Bosch's reset sequence, then customer service.

    Why & details

    Another code appears.

    Bosch (p.29), if a different error code appears: pull out the power cord plug or switch off the breaker, "Wait at least 2 minutes.", restore power and switch the appliance on. If the problem occurs again, turn off the water faucet, pull out the power cord plug, and contact customer service with the error code.

    Did the code clear?

  5. Call an authorized service provider

    • Decision
    • None
    • Pro decision

    For anything beyond filters and spray arms.

    Why & details

    Call an authorized service provider.

    Bosch (p.4): "All repairs must be performed by an authorized service provider using only original equipment factory replacement parts."

    Still showing E:92?Need a pro → call a pro

Code cleared. Nice work.

Watch the display for a day to make sure it stays clear.

Back to top

Fixed after any step? Watch the display for a day to make sure it stays clear. Still E:92 after step 5? call a pro.

What E:92 means

E:92-10 means the lower spray arm cannot turn or is not seated. E:92-40 means the filters are dirty or blocked.

More detail
Bosch's Troubleshooting table (p.29) lists "E:92-10 lights up alternately." as "Spray arm rotation of the lower spray arm is blocked." or "Lower spray arm is not correctly fitted.", and "E:92-40 lights up alternately." as "Filters are soiled or blocked."

5-minute checks

Full answer & models

Bosch E:92 has two versions. E:92-10: the lower spray arm is blocked or not fitted correctly. E:92-40: the filters are soiled or blocked.

Applies to: SHX78CM5N
Also searched as: Bosch dishwasher E92, Bosch E:92-10, Bosch E:92-40, Bosch dishwasher error E92, Bosch E92 code

Call a pro if…

  • E:92 returns after the spray arm and filter steps.
  • A spray arm or filter is cracked or will not lock.
  • Any other error code keeps coming back (Bosch: contact customer service with the code).

FAQ

What does E:92-10 mean on a Bosch dishwasher?

The lower spray arm is blocked from turning, or it is not correctly fitted (Bosch p.29).

What does E:92-40 mean?

The filters are soiled or blocked. Bosch says to clean the filters (p.29, steps on p.25).

How often should I check the filters?

Bosch says to check the filters for residue after each wash (p.25).

Source: Bosch Dishwasher Use and Care Manual SHX78CM5N (9001642005 B): Troubleshooting p.29, Cleaning filters pp.25-26, Safety pp.4-5 (media3.bosch-home.com, BSH Home Appliances). Written by the DIY Error Codes team. Updated 2026-10-17. DIY Error Codes is independent and not affiliated with or endorsed by Bosch.