B1173 The gauge control module lost communication with the TPMS control unit

What does B1173 mean on a Honda?

B1173. The gauge control module lost communication with the TPMS control unit. Tire pressure warnings may not reach the cluster. This Honda-enhanced code applies to Honda and Acura models that use this code.

Common causes of B1173

• Faulty Tire Pressure Monitoring System (TPMS) Control Unit
• Faulty Gauge Control Module
• Gauge Control Module harness is open or shorted
• Gauge Control Module circuit poor electrical connection
• Corroded or loose connector pins on the data link

How to fix B1173

1. Confirm the code with a scan tool and check every module on the system for related faults
2. Inspect the connectors at both ends of the data link for corrosion, moisture, and loose pins
3. Test the data link wiring for opens and shorts with a multimeter
4. Repair any damaged wiring or connector before replacing a module
5. Replace the gauge control module that fails testing, then clear codes and retest

Sources and review

• Last updated 2026-09-26.