mypros+
Error code reference

Miele Refrigerator Error Code 3-4-5

Icemaker

Miele codesMiele refrigerator codes
Avg. service call
$285
National average. Trip fee plus diagnostic plus labor. Before parts.
MyPros+ 3-day pass
$9.95
Same diagnostic steps, on your phone. Start now.
You keep in your pocket
~$275
Even before you buy the part.
Skip the service call. Fix it yourself.
Full procedure unlocks instantly.
Get Started

What the 3-4-5 error code actually means

Your Miele refrigerator is reporting a problem inside the icemaker unit, which means it has stopped making ice and detected something wrong it cannot correct on its own. This could be caused by a frozen water line heater at the back of the fridge or a failure inside the icemaker itself. Turning the fridge off and back on may clear the error, but if it comes back, a technician will need to inspect and likely replace a component.

Diagnostic procedure

The full 3-4-5 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Switch appliance off and on; if fault returns, check water inlet heater at back of appliance; if functioning, replace icemaker.
Unlock with pass
Unlock with pass
Unlock with pass
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock 3-4-5 procedure $9.95

Or subscribe: $29/month for unlimited access to all codes plus Max AI diagnostics.

Most common causes of 3-4-5

Ranked by how often they cause this code
  1. 1Transient control fault
  2. 2Failed water inlet heater
  3. 3Defective icemaker module
  4. 4Wiring or connection issue

Most DIYers save hundreds by diagnosing before ordering parts.

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass

Questions people ask about 3-4-5

What does 3-4-5 mean on a Miele refrigerator?
Error code 3-4-5 indicates an internal fault within the icemaker assembly. The icemaker's control logic has detected a failure it cannot resolve on its own, causing ice production to stop. The fault may stem from the water inlet heater at the back of the appliance or from a failure inside the icemaker module itself.
How do I fix the 3-4-5 error code on my Miele refrigerator?
Start by powering the refrigerator off and on to rule out a transient fault. If the code returns, inspect the water inlet heater at the back of the appliance to confirm it is functioning correctly. If the heater is working and the error persists, the icemaker module will need to be replaced by a qualified technician.
How much does it cost to repair the 3-4-5 error code on a Miele refrigerator?
Repair costs depend on the root cause. If only the water inlet heater needs replacement, costs are generally lower, typically in the range of $100 to $250 for parts and labor. If the full icemaker module requires replacement, costs can range from $250 to $600 or more depending on parts pricing and local labor rates.
Will resetting the refrigerator clear the 3-4-5 error code?
Switching the appliance off and back on is the recommended first step and can clear the code if the fault was caused by a temporary electrical glitch. If the 3-4-5 code returns after the reset, the fault is persistent and indicates a hardware problem that requires physical inspection and likely a parts replacement.
Is it safe to keep using my Miele refrigerator when the 3-4-5 code is active?
The 3-4-5 code is specific to the icemaker and does not indicate a fault in the main refrigeration or freezer system. Your refrigerator should continue to cool normally. However, the icemaker will not produce ice while the fault is active, and the issue should be diagnosed and repaired to restore full functionality.

Related Miele refrigerator error codes

All Miele refrigerator codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass