Acura B1056: Relay Control Module Lost Communication with MICU (ALARM Message)
Is your scanner showing Acura B1056?
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Acura B1056: Relay Control Module Lost Communication with MICU (ALARM Message)
OVERVIEWWhat Does The Acura B1056 Code Mean?
Poor communication between the Relay Control Module and the MICU If DTCs B1055, B1056, B1057, B1159, B1180, B1255, B1955, B2155, B2156, and B2161 are indicated, perform the MICU input test.
What Are The Potential Causes Of The Acura B1056 Code?
- Loose or poor connections between the Relay Control Module 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 Relay Control Module
- “Open” or “Short” to ground at driver’s MICU
- Faulty Relay Control Module
- Faulty MICU
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Acura Under-dash Fuse/Relay Box
>>> Relay Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Acura B1056, DTCDECODE.
