Code Definition

B1159 — Gauge Control Module – Communication with Multiplex Integrated Control Unit Lost

System: Body  |  Type: Manufacturer-Specific  |  Make: Honda

About B1159

B1159 is a manufacturer-specific body diagnostic trouble code recorded for Honda vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

B1159 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Gauge Control Module (instrument cluster) exchanges operational data with the Multiplex Integrated Control Unit (MICU) through the Honda multiplex communication network. This communication supports functions such as exterior and interior lighting, power management, door lock status, and body control signals. DTC B1159 is set when the Gauge Control Module fails to receive expected data frames from the MICU within a predetermined monitoring period, typically indicating a sustained loss rather than a brief glitch, or when invalid or corrupted messages are repeatedly detected on the network. W...

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