OEM scan tools and aftermarket scan tools both serve the purpose of diagnosing vehicle issues, but differ significantly in their scope, cost, and capabilities. Deep training is essential to use scan tools effectively. At CAR-SCAN-TOOL.EDU.VN, we provide comprehensive education that enables technicians to master these powerful diagnostic devices. This knowledge equips you to accurately interpret data and efficiently troubleshoot problems using remote technician education, enhancing your diagnostic skills for career advancement.
1. What Is The Primary Difference Between OEM And Aftermarket Scan Tools?
OEM (Original Equipment Manufacturer) scan tools are designed and used by the vehicle manufacturer, offering in-depth, vehicle-specific diagnostics, while aftermarket scan tools are built to work across multiple makes and models, providing broader compatibility at a potentially lower cost. OEM tools have specialized data and capabilities but are less flexible, while aftermarket tools offer versatility but may lack the depth of OEM tools.
- OEM Scan Tools: These are the diagnostic tools that car manufacturers use in their dealerships. They’re designed specifically for their own vehicles. They provide the most in-depth diagnostic information and capabilities for those specific vehicles. However, they typically require a license for access and are often more expensive.
- Aftermarket Scan Tools: These are created by third-party companies and are designed to work with a wide range of vehicle makes and models. They offer a more versatile solution for independent repair shops that service a variety of vehicles. Aftermarket tools can range from basic code readers to advanced diagnostic systems.
2. What Are The Key Capabilities Differentiating Basic And Advanced Aftermarket Scan Tools?
Basic aftermarket scan tools primarily read data from the engine control unit (ECU) and provide emissions-related diagnostic trouble codes (DTCs), whereas advanced aftermarket scan tools integrate with nearly all vehicle controllers, decode both standard and manufacturer-specific DTCs, and perform component testing and recalibration routines. Advanced tools offer a more thorough diagnostic capability.
- Basic Scan Tools: These tools are designed for simple tasks like reading and clearing diagnostic trouble codes (DTCs) related to emissions. They generally access the engine control unit (ECU) and, in some cases, the transmission control unit (TCU). Basic tools are useful for quick checks and identifying common issues. They typically only decode SAE-standard DTCs.
- Advanced Scan Tools: These systems offer a much wider range of capabilities. They can access almost all controllers on a vehicle, including those for the engine, transmission, ABS, airbags, and more. Advanced tools can read and decode both SAE-standard and manufacturer-proprietary codes, giving technicians a more complete picture of the vehicle’s condition. Some advanced tools also support bi-directional control, allowing technicians to perform tests and recalibrations on various components.
