High Beam Output Fault
Table of contents
B2473 CADILLAC Possible Causes
- Faulty High/Low Headlamp Relay
- High/Low Headlamp Relay harness is open or shorted
- High/Low Headlamp Relay circuit poor electrical connection
- Faulty Platform Zone Module (PZM)
How do I fix code B2473 CADILLAC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B2473 CADILLAC code
The cost of diagnosing the B2473 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B2473 CADILLAC Description
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.