H01 on a Bosch dishwasher isn’t an error code at all. It’s the delayed start indicator — your machine is waiting one hour before it starts the cycle. Press the delay button to cycle past h:00 and the dishwasher starts immediately.

Code H01 (also H02, H03… H24)
Meaning Delayed start — cycle will begin in N hours
Severity None — not a fault
Time to fix Under 30 seconds
Tools needed None

What the H01 “error” means

Bosch dishwashers let you delay the start of a cycle by up to 24 hours so the machine runs overnight or while you’re out. When you press the delay button, the display shows H01 (1 hour), H02 (2 hours), and so on up to H24. Most people who land on this page have hit the delay button by accident or have someone in the household using the feature without realising it shows up looking like an error code. It isn’t one — the machine is working correctly, just waiting.

Common causes

  • Delay button pressed deliberately for an overnight or scheduled cycle
  • Delay button pressed accidentally while loading or cleaning the panel
  • Another household member set a delay you weren’t aware of
  • Stuck delay button on a control panel with worn keys (rare)

How to clear H01

  1. Press the delay button repeatedly. Each press cycles the timer up by an hour. Keep pressing past H24 and it rolls back to h:00, which means “start now.”
  2. Press Start. With h:00 showing (or no H code), press Start and the cycle begins normally.
  3. Or just wait the hour. H01 means one hour. The cycle will start automatically when the timer reaches zero.
  4. If H01 returns straight after you clear it, the delay button is sticking. Wipe the panel dry to rule out moisture, then if it persists, the membrane behind the button has failed — that’s a control panel replacement.

FAQ

Is H01 actually an error?
No. H01 is the delayed start indicator showing a 1-hour delay. The dishwasher is working fine — it’s just waiting before it starts. People mistake it for an error because of the unfamiliar display.

Why won’t my dishwasher start when H01 is showing?
That’s the whole point of H01 — it’s deliberately holding off until the timer expires. Press the delay button to cycle past h:00, then press Start to override and run immediately.

What’s the difference between H01 and H24?
The number after H is the delay in hours. H01 is one hour, H24 is 24 hours, H12 is 12 hours, and so on. The maximum delay on most Bosch dishwashers is 24 hours.