mypros+
Error code reference

Bosch Refrigerator Error Code F35

Temperature in the ice maker has been colder than 0°C for 2 hours.

Bosch codesBosch 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 F35 error code actually means

Your Bosch refrigerator has detected that the ice maker area has been too cold for too long, more than two hours below freezing, which prevents the ice maker from releasing ice cubes normally. This usually means something is stopping the ice maker's small internal heater from doing its job, or a sensor or air duct issue is causing a temperature problem. The refrigerator flagged this to prevent ice maker damage and alert you that the ice-making system needs attention.

Diagnostic procedure

The full F35 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
Check ice-maker cover for leaks, check heater actuation and condition, check sensor, check air duct.
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 F35 procedure $9.95

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

Most common causes of F35

Ranked by how often they cause this code
  1. 1Ice maker heater failure
  2. 2Faulty ice maker temperature sensor
  3. 3Ice maker cover leak or poor seal
  4. 4Air duct obstruction or damage
  5. 5Control board not actuating heater

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 F35

What does F35 mean on a Bosch refrigerator?
F35 means the refrigerator has detected that the ice maker compartment temperature has been colder than 0°C for at least two consecutive hours. This indicates the ice maker is not completing its normal defrost or harvest cycle, which requires a brief warming phase to release ice cubes. The fault points to the ice maker heater, temperature sensor, cover sealing, or air duct as likely causes.
Is the F35 error on my Bosch refrigerator a safety concern?
F35 is not a safety hazard to people or food, but it does indicate that the ice maker is not functioning correctly and may be at risk of damage from sustained freezing without proper cycling. Leaving the fault unaddressed for an extended period could worsen ice maker component damage. Food in the main refrigerator and freezer sections is typically unaffected.
How much does it cost to repair a Bosch refrigerator F35 error?
Repair costs vary depending on which component is at fault. Replacing an ice maker temperature sensor or heater element typically falls in the range of $100 to $250 including parts and labor. If the ice maker cover needs replacement or the air duct must be cleared and repaired, costs are generally at the lower end of that range. Control board replacement, if required, can push total costs to $300 or more depending on the specific model and service rates in your area.
Can I fix the F35 error myself, or do I need a technician?
Some causes of F35, such as a blocked or iced-over air duct, can be addressed by a knowledgeable DIYer willing to carefully inspect and clear the duct. However, testing the heater for continuity and actuation, verifying sensor resistance, and checking the ice maker cover for leaks require basic electrical testing skills and comfort working inside the appliance. If the control board is involved, professional service is strongly recommended.
Will resetting the refrigerator clear the F35 code?
A reset may temporarily clear the displayed code, but F35 will return if the underlying problem is not corrected. Because the fault requires the abnormal condition to persist for two hours before triggering, a simple reset does not resolve issues with a failed heater, faulty sensor, damaged cover, or blocked air duct. Proper diagnosis and repair of the root cause are necessary for a permanent fix.

Related Bosch refrigerator error codes

All Bosch refrigerator codes

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

Get Started

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