Storage: If you’d like to remember the results of past scans, look for an OBDII scanner with a memory storage area. Other scanners only work when the vehicle engine is not running. Live data: If you want to measure a system while driving, you’ll need a scanner with the ability to measure live data. I/M, short for inspection and maintenance, can measure the vehicle’s systems to see if they’re ready for inspections testing. I/M Readiness: If you live in a state where your vehicle must undergo regular inspections, you’ll want an OBDII scanner with the I/M feature.
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Some OBDII scanners have a screen large enough to show both the error code and the troubleshooting information.
Always store the OBDII scanner carefully to avoid inadvertent damage.ĭisplay screen: A handheld scanner with a large, sharp display screen can show quite a bit of information. Some scanner cables have plastic protectors around the pins, keeping them safe, which is a nice feature. If they’re damaged, the scanner will no longer work. The app can also tap into additional information about error code troubleshooting that’s stored in the cloud.Ĭonnector: The connector on the OBDII scanner has a 16-pin plug. With an app, your error codes and data can be stored on a smartphone or tablet. But if you want a few extra features, here are some items to consider.Īpps: Some OBDII manufacturers create companion apps that accompany the hardware. The scanners can clear error lights, too. You connect this type of scanner with another device, such as a smartphone, tablet, or laptop, to get your data.Īll handheld OBDII scanners can read basic errors, generating the proper error codes. Other scanners communicate data via a USB, Bluetooth, or WiFi connection. Some OBDII scanners are wired: a cable runs from the OBDII port in the vehicle to the scanner, where it delivers data. Scanners deliver data through a couple of means. These larger scanners have powerful processors and run fast, so you can perform many scans in one day. Professionals in repair shops, however, will want to make use of a computer-sized OBDII scanner.
When shopping for an OBDII scanner for home use, you’ll likely be purchasing a handheld scanner. Vehicles from 1996 and newer should be compatible with OBDII scanners. OBDII appeared in the mid-1990s with a universal port that allows one device to scan multiple models of cars. The first version appeared in the early 1980s, but it was limited to certain makes and models. OBD is short for “onboard diagnostics.” OBDII is the second version of this hardware. Types of OBDII scanners and how they work CAN (controller area network) is used in the majority of cars with 2004 and newer model years. For the fastest performance from an OBDII scanner, look for one that is CAN-compatible.