Acura B2156: Driver's MPCS Unit Lost Communication with MICU (MIRRORSW Message)
Is your scanner showing Acura B2156?
No worries. We'll show you what it means and how to deal with it.
Acura B2156: Driver's MPCS Unit Lost Communication with MICU (MIRRORSW Message)
OVERVIEWWhat Does The Acura B2156 Code Mean?
Poor communication between the Driver’s MPCS Unit and the MICU. (Mirror switch malfunction)
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 B2156 Code?
- Loose or poor connections between the driver’s MPCS unit and the MICU
- “Open” or “Short” to ground
- Faulty MICU, replace the under-dash fuse/relay box
- Faulty Driver’s MPCS 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
>>> 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 B2156, DTCDECODE.
