Acura B2100: Communication Bus Line Error

Is your scanner showing Acura B2100?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Acura B2100: Communication Bus Line Error

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$90-$150
Can I Still Drive?
:
Yes (Short-term only)

What Does The Acura B2100 Code Mean?

This code indicates communication Bus Line Malfunction.

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

What Are The Potential Causes Of The Acura B2100 Code?

Below are some possible causes of this DTC:

  • Loose or poor connections at the MICU and B-CAN connected units that are listed below:
  • Under-hood fuse/relay box
  • Adaptive front lighting control unit
  • Gauge control module
  • Combination switch control unit
  • Driver’s MPCS unit
  • Keyless access control
  • Climate control unit
  • HandsFreeLink control unit
  • Power seat control unit
  • AcuraLink control unit

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Acura B2100, DTCDECODE.

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