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B0300 Body

HVAC Evaporator Temperature Sensor Circuit

The HVAC controller reports a fault in the evaporator temperature sensor circuit, used to prevent evaporator icing.

Affected components

  • Evaporator temperature sensor
  • Hvac control module

Common causes

  • High likelihood: Evaporator sensor failure
  • Medium likelihood: Faulty sensor connector

Possible symptoms

  • Warning light or symbol related to the affected system
  • Comfort or safety function impaired

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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