Review on 🚗 Dnose DN601 Car Code Reader & Battery Voltage Tester 9 Modes: Latest OBD2 Scanning Tool for Universal Auto OBDII Scanner - 2021 New Version by Will Porter

When modern cars have problems they send a code through the 'cigarette lighter' or 'electrical socket' depending on how old you are . All auto mechanics have a reader of these codes and use them to diagnose "strange noise your car is making when reversing" or some other problem. Then they search the computer for a solution and the dark art of automatic diagnosis is now clear. Want to make sure you don't buy a gearbox when all you need is an air filter? Get one of them. It diagnoses most problems and you can go to your mechanic with peace of mind. "My car needs a fuel filter," you can say instead of "It makes a strange noise and feels weak on some hills." Eaten ramen for a month. I'm just saying. Do what's best for you and your car and keep these fairly inexpensive gadgets handy. You'll be glad you did.