B1055 HONDA - Relay Control Module Lost Communication With MICU

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

Possible causes

  • Faulty Multiplex Control Unit Module (MICU)
  • Multiplex Control Unit Module (MICU) harness is open or shorted
  • Multiplex Control Unit Module (MICU) circuit poor electrical connection
  • Faulty Relay Control Module
  • Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • B1055 Honda Description

    The Relay Control Module monitors the Multiplex Control Unit Module (MICU). The Relay Control Module sets the OBDII code when the Multiplex Control Unit Module (MICU) is not to factory specifications.
    OBDII Code B1055 Honda - Relay Control Module Lost Communication With MICU - Engine-Codes.com

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