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What is an OBD (On-Board Diagnostics) Scanner?

An OBD scanner is a diagnostic tool used to troubleshoot issues with a vehicle's engine, transmission, and other electronic systems. It connects to the vehicle's onboard computer to retrieve data from the vehicle computer and diagnose problems. OBD scanners can be used to check for engine codes, transmission codes, and other system codes.

On-board diagnostics (OBD) are vehicle emission control systems that monitor and report data related to a vehicle's emission control and engine systems. The data is used to diagnose and repair emission-related problems. OBD systems are required on all new cars and light trucks sold in the United States since 1996. OBD systems are designed to work with a vehicle's emission control system to help identify problems that may cause the vehicle to pollute. The system does this by monitoring and reporting data related to the vehicle's emission control and engine systems. The data is used to diagnose and repair emission-related problems.

The History of OBD

The history of OBD began in the early 1970s when the first system was introduced for general vehicle system monitoring. Today, OBD is required on all new cars and trucks sold in the United States. The system works by constantly monitoring the engine and emission control systems for any signs of problems. If a problem is detected, the OBD system will store a diagnostic trouble code (DTC) in the vehicle's computer. This code can be read by a technician using an OBD scanner and can be used to diagnose and repair the problem.

OBD has been continuously evolving since its inception, and today's OBD II systems are much more sophisticated than the original. Newer OBD systems can not only detect engine and emission problems, but can also provide information on the health of the battery, brakes, and even the tires. Some systems can even provide real-time data on fuel economy and emissions.

Differences Between OBD I and OBD II

There are several key differences between OBD I and OBD II systems. For one, OBD II systems are far more sophisticated than OBD I, with the ability to monitor a wider range of engine parameters. Additionally, OBD II systems feature onboard diagnostics that can provide real-time information about the engine's performance, unlike OBD I systems that provide information after the engine has failed. Finally, OBD II systems are required by law in many jurisdictions, while OBD I systems are not.

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