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Bosch·Dishwasher (Gaggenau)high severity
Bosch Error Code F1
Flood switch error
Common Causes
- 1Water in base pan
- 2Hose leak
- 3Float switch triggered
Gaggenau units are typically hard-plumbed with copper supply lines. Check copper fittings for green corrosion — a slow pinhole leak can fill the base pan over multiple cycles.
Step-by-Step Troubleshooting
- 1
Pull unit from cabinet and tilt 45 degrees forward to drain base pan
- 2
Inspect all internal hose connections and clamps for active drips
- 3
Check AquaStop hose assembly — Gaggenau uses the same BSH system as Bosch/Siemens
- 4
Verify float switch returns to rest position after water is drained
- 5
If float switch sticks in triggered position, clean the mechanism or replace
Pro Diagnostic Tip
Gaggenau panel-ready dishwashers use longer door gaskets than standard Bosch due to the custom panel overlay weight. A sagging panel shifts the gasket seal — check panel alignment before condemning the gasket itself.
You Might Also Notice
- •Water pooling under unit
- •Unit stops immediately after start
- •Continuous drain pump running
Parts, Cost & Difficulty
Repair Difficulty
Hard — Advanced Skills RequiredEstimated Repair Cost
$200–$500
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
12-008-466-003 (door gasket, Gaggenau)12-009-117-001 (AquaStop hose)12-006-684-003 (sump seal kit)
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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Safety First — Know the Risks
High-voltage components and pressurized water lines create flood and shock risk. A single loose fitting can cause thousands in water damage. Our techs are licensed and insured — let them handle the risk.
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Get Professional Help Now
Error code F1 is a high-severity issue that can cause further damage to your dishwasher (gaggenau) if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does Bosch error code F1 mean?
Bosch error code F1 indicates: Flood switch error. This is a high-severity issue affecting your dishwasher (gaggenau).
How do I fix Bosch error code F1?
Pull unit from cabinet and tilt 45 degrees forward to drain base pan Then, Inspect all internal hose connections and clamps for active drips Then, Check AquaStop hose assembly — Gaggenau uses the same BSH system as Bosch/Siemens There are 2 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my dishwasher (gaggenau) has error F1?
Besides the error code on the display, common signs include: Water pooling under unit; Unit stops immediately after start; Continuous drain pump running. If you notice any of these symptoms, check your dishwasher (gaggenau)'s display panel for error code F1.
How much does it cost to fix Bosch F1?
Repair costs for Bosch F1 typically range from $200 to $500 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.