Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
To diagnose the B2473 Buick code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
High beams are commanded by Platform Zone Module (PZM) through an output to HI/LO beam relay. When headlight relay is energized, HI/LO beam relay provides power source to low beams or high beams.
The Diagnostic Trouble Code (DTC) B2473 will set when commanded state of high beams does not match the feedback state. When DTC B2473 is set, PZM will continue to command state requested until IPC revokes request. DTC B2473 will clear when the commanded state matches the feedback state.
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