Code Definition

B1158 — Gauge Control Module – Communication with Relay Module Lost

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

About B1158

B1158 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.

B1158 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) relies on communication with the Relay Control Module over the Honda multiplex communication network to monitor and control functions such as exterior lighting, ignition switched loads, and accessory circuits. DTC B1158 is logged when the Gauge Control Module fails to receive valid data from the Relay Module within a specified time window, or when the transmitted signals are corrupted, indicating a communication loss or interruption on the network. The Relay Module typically handles high current outputs for lamps, fuel pump, cooling fan, and simila...

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