F02
What code F02 means on a Bosch washing machines, what causes it, and which part to check first.
● SEVERITY: MEDIUM
Bosch F02 means: Heating timeout wash temperature not reached within expected time. The documented cause is: Failed heating element. Failed NTC thermistor. Wiring fault to heating circuit.
What F02 means
Heating timeout wash temperature not reached within expected time
The display shows F02 and the machine stops until the fault is cleared.
What the technical documentation says
Causes documented in the technical source published by whitegoodshelp.co.uk
| DOCUMENTED CAUSE OR CHECK |
|---|
| Failed heating element |
| Failed NTC thermistor |
| Wiring fault to heating circuit |
Replacement parts
Tools you'll need
Before you open anything
Unplug the machine and close the water tap before removing any panel. Water and mains electricity sit centimetres apart inside a washing machine. If the drum still holds water, drain it from the filter first — it can be scalding.
What to check, in order
From the quickest check to the one that needs a technician.
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Frequently asked questions
What does F02 mean on a Bosch?
Heating timeout wash temperature not reached within expected time The documented cause is: Failed heating element. Failed NTC thermistor. Wiring fault to heating circuit.
Can I fix F02 myself?
It depends on the part involved: Failed heating element. Failed NTC thermistor. Wiring fault to heating circuit. Clearing a filter or straightening a hose is within reach of anyone; anything behind a panel means mains electricity and water together — that is a job for a technician.
Does Bosch use other codes on this appliance?
Yes: we document 20 other codes for Bosch on this washing machines. They are listed at the bottom of this page, each with its own meaning.
Does the same code mean the same thing on other brands?
Often not. The same two characters can point to completely different faults depending on the manufacturer — always check the page for your own brand.