To oversimplify, your car maintains a list of faults, and if that list isn’t empty, it’ll turn on the check engine light. An obd2 code reader let’s you see those codes. I can vouch that these Bluetooth readers + torque are the cheapest way to get these codes without going to a parts store. Even if you have no intention of doing your own work on your car, it’s good to have an idea what the problem is so your mechanic doesn’t rip you off.
They generally only return obd2 codes though, which are required by law for emissions. Many automakers keep extra, proprietary codes that require expensive, proprietary tools to read.
I’m not the person you replied to, but it’s great for telling you why the check engine light is on. If you’re somewhere that requires emission testing: you can diagnose if you have an exhaust leak, bad O2 sensor, clogged catalytic converter, etc. Besides that: its good just to know if the check engine light can be safely ignored.
What are the main things you use it for? All I ever do is change tires and oil. Both my cars are old, but have never broken down.
To oversimplify, your car maintains a list of faults, and if that list isn’t empty, it’ll turn on the check engine light. An obd2 code reader let’s you see those codes. I can vouch that these Bluetooth readers + torque are the cheapest way to get these codes without going to a parts store. Even if you have no intention of doing your own work on your car, it’s good to have an idea what the problem is so your mechanic doesn’t rip you off.
They generally only return obd2 codes though, which are required by law for emissions. Many automakers keep extra, proprietary codes that require expensive, proprietary tools to read.
I’m not the person you replied to, but it’s great for telling you why the check engine light is on. If you’re somewhere that requires emission testing: you can diagnose if you have an exhaust leak, bad O2 sensor, clogged catalytic converter, etc. Besides that: its good just to know if the check engine light can be safely ignored.