Acura B1255: Combination Switch Control Unit Lost Communication with MICU (MICU Message)
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Acura B1255: Combination Switch Control Unit Lost Communication with MICU (MICU Message)
OVERVIEWWhat Does The Acura B1255 Code Mean?
Poor communication between the Combination Switch Control Unit and the MICU.
If DTCs B1055, B1157, B1806, B1955, and B2155 are indicated, perform the MICU input test.
If DTCs B1055, B1057, B1806, B1955, and B2155 are indicated, perform the MICU input test.
If no other codes are present perform the Combination Switch Control Unit input test
What Are The Potential Causes Of The Acura B1255 Code?
- Loose or poor connections between the Combination Switch Control Unit and the MICU
- Blown fuse in the main under-hood fuse box
- Blown fuse in the under-dash fuse/relay box
- “Open” or “Short” to ground at the Combination Control Unit
- “Open” or “Short” to ground at the MICU
- Faulty MICU
- Faulty Combination 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
>>> Headlight Turn Signal Combination Switch
>>> 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
Accessories & Equipment Multiplex Integrated Control System Service Manual for B1255 – 2004 Acura TSX, page 45.
