Error code reference

Bosch Dishwasher Error Code 2H

Last wash cycle too long (over 99 minutes); can be caused by cold inlet water or heating system fault (heater, Hi-Limit, flow switch, NTC, control module heater relay).

SourceBosch Dishwasher - Service Training Manualp. 45

Diagnostic procedure

The full 2H procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check incoming water temperature and all heating system components.

SourceBosch Dishwasher - Service Training Manualp. 45

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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