E:18
What code E:18 means on a Bosch tumble dryers, what causes it, and which part to check first.
● SEVERITY: MEDIUM
Bosch E:18 means: Heater temperature sensor error. The documented cause is: Unplug the dryer and check the wire harness connections on the heater temperature sensor. Reconnect the wire harness if loose. Replace the wire harness if damaged.
What E:18 means
Heater temperature sensor error
The display shows E:18 and the machine stops until the fault is cleared.
What the technical documentation says
Causes documented in the technical source published by applianceaid.com
| DOCUMENTED CAUSE OR CHECK |
|---|
| Unplug the dryer and check the wire harness connections on the heater temperature sensor |
| Reconnect the wire harness if loose |
| Replace the wire harness if damaged |
| If the wire harness connections are okay, replace the heater temperature sensor |
Replacement parts
Tools you'll need
Before you open anything
Unplug the machine before removing any panel. Lint is flammable: never run a dryer with the filter removed, and clear the duct if the code points to airflow.
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 E:18 mean on a Bosch?
Heater temperature sensor error The documented cause is: Unplug the dryer and check the wire harness connections on the heater temperature sensor. Reconnect the wire harness if loose. Replace the wire harness if damaged. If the wire harness connections are okay, replace the heater temperature sensor
Can I fix E:18 myself?
It depends on the part involved: Unplug the dryer and check the wire harness connections on the heater temperature sensor. Reconnect the wire harness if loose. Replace the wire harness if damaged. If the wire harness connections are okay, replace the heater temperature sensor 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 1 other codes for Bosch on this tumble dryers. 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.