Relay Control Module Lost Communication With MICU


Table of contents

B1057 ACURA 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

How do I fix code B1057 ACURA?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Cost of diagnosing the B1057 ACURA code

  The cost of diagnosing the B1057 ACURA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

B1057 ACURA 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.

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