Bosch Washer - Er:05 Error Code

The temperature sensor (NTC) is shorted.

Meaning

The temperature sensor (NTC) is shorted.

The Bosch Er:05 error code indicates that the NTC temperature sensor is reporting a short circuit condition. The NTC sensor monitors water temperature during the wash cycle. If it fails electrically, the washer cannot regulate heating and triggers Er:05 to prevent overheating.

Symptoms

  • Washer stops mid-cycle
  • Water overheats or remains cold
  • Er:05 appears early in the wash

Causes

  • Shorted NTC sensor
  • Damaged wiring harness
  • Moisture inside the sensor connector
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Step-by-Step Fixes

  • Inspect the NTC sensor wiring.
  • Test the sensor for proper resistance.
  • Replace the NTC sensor if shorted.
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Safety Notes

  • Heating components may remain hot after operation.
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Applicable Models

Show Models
  • WFL2060
  • WFR2460
  • WFMC3301
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Related Pages

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Other Bosch Washer Error Codes

Show All Error Codes

Model-Specific Notes

On WFR models, Er:05 often appears after long hot cycles due to thermal stress on the NTC wiring.

Disclaimer

The information provided on this page is for educational and informational purposes only. Repairs involve electrical, mechanical, and water-related risks. Always follow manufacturer instructions and consider contacting a qualified technician for diagnosis or repair.

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