Acura B1806: Power Seat Control Unit Lost Communication with MICU (MICU Message)

What Does The Acura B1806 Code Mean?

This code indicates poor communication between the Power Seat Control Unit and the MICU.

NOTE:

• If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
• If DTCs B1055, B1057, B1157, B1159, B1255, B1355, B1955, B2155, B2156, and B2161 are also indicated, perform the MICU input test.
• If no additional codes are present. perform the Power Seat Control Unit input test.

What Are The Potential Causes Of The Acura B1806 Code?

Below are some possible causes of this DTC:

• Loose or poor connection between the Power Seat Control Unit and the MICU
• Blown fuse in the main under-hood fuse box
• Blown fuse in the under-dash fuse/relay box
• “Open” circuit between the Power Seat Control Unit and the MICU
• Poor ground
• Faulty Power Seat Control Unit
• Faulty MICU, replace the under-dash fuse/relay box

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
>>> Genuine Honda Left Power Seat Switch Assembly
>>> Acura Under-dash Fuse/Relay Box

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

Reference Sources

Acura B1806, DTCDECODE.