Bosch codes are interpreted with the washer's E-Nr. This index brings together verified door, inlet, drain, leak, and suds warnings, with platform-specific limits.
The E-Nr determines which manual to use
The full identification on the rating plate lets you find the manual and verify the code exactly as shown. Keep letters, zeros, colons, and suffixes. A number match with a Bosch dishwasher does not identify the same fault.
Choose the affected circuit
| Documented warning | What to check first |
|---|---|
| E16 | Door lock recognition. |
| E17/F17 | Water supply time exceeded. |
| E18 | Drain, filter, and drain hose. |
| E23 | Leak or water in the base. |
| E33 | Overdosing and excessive suds. |
If water is still in the machine, use the E18 guide before opening a filter. If water is leaking, E23 requires the leak to be addressed, not a test cleaning to be started. The E17/F17 pair is documented by Bosch; that does not mean E and F can be swapped in any other code.
What the user can check
The check is limited to the lock, supply, hoses, and accessible parts authorized by the manual. Before opening a filter, the water must be drained; before disconnecting an inlet, the water must be turned off. Warnings that remain after external conditions are corrected require diagnosis.
If the panel shows another combination, consult the E-Nr manual or request support. Do not look for a replacement part based only on the error number.
Frequently Asked Questions
Where can I find the full model of my Bosch washer?
Look for the E-Nr on the rating plate and copy the suffix too. The appliance documentation shows where to find it; you do not need to remove the cabinet to look for the reference.
Does the same code mean the same thing on all their washers?
It should not be assumed. Bosch uses different generations and platforms, and a dishwasher code is not interpreted the same way as a washer code. The E-Nr manual confirms the application.
How do I tell a normal warning from a fault?
Check the message and the program status. An active function indicator may be normal; a code that repeatedly interrupts the cycle requires the manual's specific checks.
Does clearing the code confirm the problem is fixed?
No. Disappearing from the display does not prove that a drain is clear or that a leak has been repaired. The physical condition and later operation determine whether the issue continues.
What information should I provide to service?
Provide the full E-Nr, FD if listed on the plate, the exact code, and the cycle stage. Describe any standing or visible water, installation changes, and maintenance already performed.
The full warning text and the E-Nr are more useful than the series trade name.