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B0186 Body

Front Blower Motor Speed Performance

The HVAC control module has detected that the front blower motor does not run at the commanded speed. Possible causes include a worn motor, blocked airway, or driver module fault.

Affected components

  • Blower motor
  • Blower resistor
  • Cabin air filter

Common causes

  • High likelihood: Blower motor worn or seized
  • Medium likelihood: Cabin filter heavily blocked

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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