U1149 JEEP - Lost Communication With Multi-Function Switch

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

  • Faulty Left Multifunction Switch
  • Left Multifunction Switch harness is open or shorted
  • Left Multifunction Switch circuit poor electrical connection
  • Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • U1149 Jeep Description

    The Powertrain Control Module (PCM) monitors the Multi-Function Switch. The PCM sets the OBDII code when the Multi-Function Switch is not to factory specifications or the Cluster does not receive any LIN Bus messages from the Left Multifunction Switch.
    OBDII Code U1149 Jeep - Lost Communication With Multi-Function Switch - AutoCodes.com

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