Multiplex Integrated Control Unit Internal Error


Table of contents

B1001 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

How do I fix code B1001 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 B1001 ACURA code

  The cost of diagnosing the B1001 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)

B1001 ACURA Description

  The Multiplex Control Unit Module (MICU) monitors itself. The MICU sets the OBDII code when there is an internal error.

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