If you're a personal user, knowing how to read and interpret OBD codes is a trick that's well worth having up your sleeve for those times when the Check Engine light in your car suddenly comes on ...

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

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

Check for trouble codes of course. Sure, you could spend the money on a good Ford-specific EEC-IV diagnostic code reader, but why do that when you could just as easily test for trouble codes manually?

The increase in technology utilized to meet OBD II requirements is substantial. The benefit has been vehicles with lower emissions, better fuel economy, and "showroom-new" power output over the ...