Acura B1843: Power Seat Control Unit Lost Communication with Power Tilt/Telescopic Steering Control Unit (UART line)

Is your scanner showing Acura B1843?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Acura B1843: Power Seat Control Unit Lost Communication with Power Tilt/Telescopic Steering Control Unit (UART line)

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$75-$200
Can I Still Drive?
:
No

What Does The Acura B1843 Code Mean?

Poor communication between Power Seat Control Unit and the Power Tilt/Telescopic Steering Control Unit.

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 B1843 Code?

  • Check for loose or poor connections
  • Blown fuse in the main under-hood fuse box
  • Blown fuse in the under-dash fuse/relay box
  • “Open” condition between Power Seat Control Unit and the Power Tilt/Telescopic Steering Control Unit
  • Faulty Power Seat Control Unit
  • Faulty Power Tilt/Telescopic 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:

>>> Twippo 372Pcs Waterproof Wire Connectors Kit

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

Reference Sources

Acura B1843, DTCDECODE.

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