Honda B1843: UART Communication Error

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

Presented by

Randy Worner

00:00/00:00

OVERVIEW

Severity

Medium

DIY Difficulty Level

Intermediate

Repair Cost

$75-$300

Can I Still Drive?

Yes (Short-term only)

What Does The Honda B1843 Code Mean?

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

Fuse
Open in the UART wire between the power mirror control unit and power seat control unit
Open or high resistance in the wire between the power mirror control unit and body ground
Faulty power mirror control unit

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!

Honda B1843, DTCDECODE.

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