Code Definition

B1156 — Gauge Control Module – Communication with Combination Switch

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

About B1156

B1156 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.

B1156 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) and the combination switch (which houses lighting, indicator, and wiper controls) communicate with each other over the Honda multiplex communication system. DTC B1156 is stored when the Gauge Control Module detects an absence of expected signals, invalid data, or no response from the combination switch within a specified time frame. The combination switch transmits driver stalk inputs as digital messages on the multiplex bus, which the cluster interprets to drive indicator lamps, chime outputs, and warning displays. When this code is set, the drive...

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