Most Bosch dishwasher resets are 'hold Start for 3-5 seconds, then 60-second power cycle at the breaker.' That clears about half the soft-fault codes (random E codes after a cycle abort, frozen UI, cycle stuck on a step). If the reset doesn't stick, you're looking at one of four real Bosch failures — the E15 leak switch, E22 filter, E24 drain, or door latch.
Reviewed by Mike Larson, Master Appliance Technician · 18+ yrs in-field · Last reviewed
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Quick answer
To reset a Bosch dishwasher (Ascenta, 100/300/500/800 Series, Benchmark): (1) hold the Start button for 3-5 seconds until the cycle indicator clears; (2) if that doesn't work, kill power at the breaker for 60 seconds, then restore; (3) on touch-control 500/800/Benchmark, press Power, then hold Start until the display blanks. If the dishwasher returns with the same fault — E15 (water in base), E22 (filter), E24 (drain hose), E25 (drain pump), or door-latch fault — the reset can't fix the underlying hardware. Most Bosch fault repairs land $245–$485 all-in. $149 trip fee waived on approval. 1-year warranty.
Root causes, ranked by what we find
What it is: The control firmware hung. Common after a brown-out, a long pause mid-cycle, or detergent door not opening on time. No code, no leak, no smell — just a frozen UI or a cycle that won't start.
Fix: Hold Start 3-5 seconds. If no response, kill power at the breaker for 60 seconds and restore. Soft-faults clear ~50 % of 'won't start' Bosch calls.
Typical all-in: Free (DIY reset)
What it is: The Bosch AquaStop float in the base pan tripped. The reset clears the code but it returns the moment the cabinet refills with water. Real causes: cracked sump gasket, weeping fill valve, failed drain-hose clamp, or a slow tub-to-base leak.
Fix: Tip the unit, drain the base, find and replace the leaking part (sump gasket, fill valve, drain clamp, tub crack rare).
Typical all-in: $285–$485 all-in
What it is: The dual-stage filter (fine + coarse) in the tub bottom packed with food residue. Reset won't clear it. Affects circulation and triggers E22.
Fix: Remove and clean both filter stages. We also inspect the spray arm jets and the soil-sensor lens.
Typical all-in: $185–$245 all-in (often a teaching visit)
What it is: E24 = drain hose kinked or air-gap clogged. E25 = drain pump impeller seized or open winding. Reset clears the code; the next drain attempt re-throws it.
Fix: Inspect the drain hose loop and disposal knockout (E24), or replace OEM drain pump (E25).
Typical all-in: $245–$425 all-in
What it is: Bosch needs a confirmed door-closed signal before any cycle starts. Worn latch or failed interlock = 'won't start' that no reset fixes.
Fix: Test latch continuity, replace OEM door latch assembly.
Typical all-in: $245–$345 all-in
Diagnostic order
With the dishwasher powered on, hold the Start button for 3-5 seconds until the cycle indicator lights clear and the unit returns to idle.
Turn the dishwasher off at the breaker (or unplug if accessible) for 60 full seconds, then restore power. This clears the control's volatile memory.
Press Power, then immediately hold Start until the display blanks. Release; the unit returns to a clean idle state.
Start a short Rinse cycle. If it completes without a fault code, the reset cleared a soft-fault and you're done.
E15 = water in base. E22 = filter. E24/E25 = drain. Door fault = latch. A reset doesn't fix hardware faults — call us for same-day Bosch service.
FAQs
Hold the Start button for 3-5 seconds until the cycle indicator clears. If that doesn't work, kill power at the breaker for 60 seconds and restore. On 500/800/Benchmark, press Power then hold Start until the display blanks.
A reset clears the displayed code but doesn't fix the underlying hardware. E15 = water in the base pan (leak). E22 = clogged filter. E24/E25 = drain hose or pump. A real fix means finding and replacing the leaking or failed part.
No dedicated button — the Start button doubles as the reset (hold 3-5 seconds). For a full reset, cut power at the breaker for 60 seconds.
No — Bosch dishwashers don't store user settings the way a washer does. The reset only clears the current cycle state and fault codes, not your preferred cycle or rinse-aid level.
Sometimes. ~50 % of 'won't start' calls are a soft-fault the reset clears. The other 50 % are door-latch failures, control-board failures, or a tripped E15 leak switch. If the reset doesn't bring it back, we diagnose same-day.
$245–$485 all-in for most faults. E15 leak repair $285–$485, drain pump $285–$425, door latch $245–$345, control board $385–$585. $149 trip fee credited to the repair.
