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What Info Can an OBD2 Scanner Tell Me?

An OBD2 (On-Board Diagnostics II) scanner can provide information about the status and health of various vehicular systems.

We Plugged In, Diagnosed, and Ranked the Best OBD-II Scanners for DIY Mechanics

Did your vehicle's check-engine light just pop on? An OBD-II scanner can provide some direction. We tested a handful to find ...