Communication Error (Extended)
The F46 error code is an extended communication fault between the control board and auxiliary modules (motor controller, display, or sensor boards).
~25%
DIY Fixable
$200-500
Typical Repair Cost
1-2 hrs
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. If reset resolves it, safe to use. If recurring, needs inspection.
Can I reset the code?
Yes. Yes. 10-minute reset resolves most cases.
When to stop immediately?
Stop if you notice: Recurring F46, Display dead.
Symptoms You May Notice
Machine stops
Cycle halts mid-program
Display issues
Panel may freeze or go blank
Motor may stop
If communication to motor controller is lost
F46 at various points
Can appear at any cycle phase
Possible Causes
Loose Internal Connection
A connector has worked loose from vibration.
Requires ProfessionalPower Surge
Damaged communication IC.
Requires ProfessionalTransient Glitch
One-time disturbance.
DIY PossibleBoard Failure
An auxiliary board has failed.
Requires ProfessionalWiring Damage
Internal harness damaged by heat.
Requires ProfessionalSafe Checks You Can Do
-
1
Power Reset
Turn off at mains for 10 minutes.
Standard first step for communication faults.
-
2
Check Power
Verify stable power supply.
Avoid shared outlets.
-
3
Test After Reset
Run a cycle and monitor.
Single occurrence = no concern.
-
4
Monitor
Log any recurrence.
Pattern helps technician.
-
5
Check Recent Events
Power outage or surge recently?
Use surge protector.
When to Call a Professional
Contact a qualified Miele technician if:
- Persists after reset
- Internal connection damaged
- Board failure
- Under warranty
Need Professional Help?
Find qualified Miele technicians in your area for proper diagnostics and repair.
Schedule Appointment