B1279 - Dimmer Switch Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Dimmer Switch
  • Dimmer Switch harness is open or shorted
  • Dimmer Switch circuit poor electrical connection
  • Faulty Multiplex Integrated Control Unit (MICU)

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B1279 Description

The Multiplex Integrated Control Unit (MICU) monitors the Dimmer Switch. The MICU sets the OBDII code when the Dimmer Switch is not to factory specifications.
OBDII Code B1279 - Dimmer Switch Circuit Malfunction - AutoCodes.com

B1279 Information for specific makes

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B1279 Comments

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