Bosch
SHU9955 UC/12 (FD 8105 -)
Dishwasher
Bosch SHU9955 UC/12 (FD 8105 -) — Error Code E27
Bosch SHU9955 UC/12 (FD 8105 -) error code E27: Power supply voltage too low.
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Methodology: We combine manufacturer references with recurring service patterns, then review for safe, step-by-step repair guidance.
Sources: Manufacturer fault-code sheets, service manuals, and recurring field-repair patterns.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
Looking for the full diagnosis and repair guide? View complete Bosch Dishwasher error code E27 guide →
Repair guidance: the symptoms and steps below come from the canonical Bosch Dishwasher E27 guide and apply to SHU9955 UC/12 (FD 8105 -) unless your manual says otherwise.
Symptoms on SHU9955 UC/12 (FD 8105 -)
- ⚠️ Dishwasher not filling
- ⚠️ Dishes coming out dirty
- ⚠️ Machine stops mid-cycle
How to Fix Error E27 on SHU9955 UC/12 (FD 8105 -)
- 1 Unplug the dishwasher for 60 seconds then plug back in — this resets the control board and clears many temporary faults
- 2 Check that the water supply valve behind the machine is fully open
- 3 Inspect the inlet hose screen filter — sediment often blocks it (unscrew hose, clean mesh screen)
- 4 Test the water inlet valve with a multimeter — replace if no continuity ($15–$80 part)
- 5 If the error persists after basic troubleshooting, contact a qualified appliance technician
🛠️ You'll need: Screwdriver set, Pliers, Multimeter
· Time: 20–40 min
Questions People Also Ask for Error E27
What does Bosch Dishwasher error code E27 mean? ▼
Error code E27 on a Bosch Dishwasher means: Power supply voltage too low. The appliance detected this condition and has stopped or limited operation to prevent further damage.
How do I fix Bosch Dishwasher error code E27? ▼
First, unplug the dishwasher for 60 seconds to reset the control board. If error E27 returns, the root cause (power supply voltage too low) needs to be addressed — check connections, filters, and hoses before calling a technician.
Is it safe to use my Bosch Dishwasher with error code E27? ▼
It depends on the cause. Most E27 errors mean the appliance has stopped itself as a safety measure. Check the 'Should I unplug it?' section above for specific guidance on this error.