Bosch dishwasher error codes

The short answer

The Bosch error codes owners mention most are E15 (8), E24 (7), E21 (1). Each page explains what the code means and links to the official steps.

Bosch error codes that owners mention, with what Bosch says each one means and how many owners mention it. Codes that owners rarely mention aren't listed yet.

CodeWhat Bosch says it meansOwners who mention it
Bosch E15 code Leak protection: the safety switch detected water in the base 8
E24 on a Bosch dishwasher Not draining: blocked drain pump, kinked drain hose, or clogged drain 7

Most owners describe the problem in their own words ("it won't drain") rather than quoting the code, so the problem pages usually have more reports than the code pages.