Bosch Dryer Error E18

⚡ Quick Answer: The Bosch dryer E18 error code indicates a drainage issue, often linked to a malfunctioning heater/air temperature sensor (NTC R2). This sensor fails ... ✅ DIY Fixable

What Does Error E18 Mean?

The Bosch dryer E18 error code indicates a drainage issue, often linked to a malfunctioning heater/air temperature sensor (NTC R2). This sensor fails to report valid temperature readings to the control board, leading to premature cycle termination and improper heating. Users may notice that drying cycles stop unexpectedly and that the appliance may not heat correctly, potentially causing water accumulation within the dryer.

Common Symptoms:

  • Dryer stops and displays E18 code on display
  • Drying cycles may abort early
  • Heating may stop or not operate correctly

Possible Causes

  • Faulty heater/air temperature sensor (NTC R2) (medium)
  • Loose or damaged wiring/connectors to the R2 temperature sensor (medium)

How to Fix Error E18

DIY Fix Basic visual check and reset

  1. Power off and unplug the dryer.
  2. Wait a few minutes, then plug it back in to see if the error persists (simple power reset).
  3. Ensure the dryer’s vents and lint filter are clean (helps overall operation, but does not directly fix E18).

Technician Only Inspect and replace temperature sensor and wiring

  1. Disconnect power to the dryer.
  2. Access the heater/air temperature (R2) sensor — typically located near the heater housing.
  3. Inspect wiring harness and connectors for damage, corrosion, or looseness; repair or replace as needed.
  4. Test the NTC sensor resistance with a multimeter and compare to manufacturer specifications; replace if out of range.
  5. Reassemble and test dryer operation.

Parts needed: NTC temperature sensor (R2), Wiring harness/connectors

🛑 When to Call a Pro:
  • If the error persists after wiring and sensor checks, or if you are not comfortable performing sensor diagnostics.

Technical Specifications

wattage 120W
component Drain Pump
resistance 30-50 ohms
part_number Bosch 00619926
voltage_rating 240V AC

Common Questions

What does E18 error mean on bosch dryer?

E18 indicates a drainage issue due to a faulty heater/air temperature sensor, causing cycles to abort and heating problems.

Can I fix bosch dryer E18 error myself?

Yes, you can perform a basic visual check and reset the dryer. Ensure the vents and lint filter are clean.

How much does it cost to fix E18 error?

The estimated repair cost is medium, covering parts and technician labor for sensor replacement.

When should I call a technician for E18?

Call a technician if the error persists after checking the wiring and sensor, or if you're uncomfortable diagnosing the issue.

Sources & References

Data last verified: 2026-01-16

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