Trouble Codes
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Using OBD Diagnostics to Determine Fair Market Value for Used Vehicles
OBD diagnostics for a used car can reveal hidden engine, transmission, and emission faults that standard inspections often miss. This guide explains how to use trouble codes, live data, and freeze frame reports to estimate repair costs, negotiate confidently, and avoid overpaying for a vehicle with concealed issues.
Prakhar Agrawal
8 min read