MS309 OBD2 Scanner – Car Fault Code Reader & Diagnostic Tool

Read & Clear Check Engine Codes in Seconds

The MS309 OBD2 Scanner is an upgraded, easy-to-use car diagnostic tool that lets you quickly identify and clear engine fault codes — no mechanic required. Whether your check engine light just came on or you want to stay ahead of costly repairs, the MS309 gives you the answers you need right at your fingertips. Compatible with most 1996 and newer OBD2-compliant vehicles, this reliable code reader is a must-have for every driver and DIY enthusiast.

Made in Mainland China.

Key Features

• Read & Clear DTCs — Retrieves and erases Diagnostic Trouble Codes (DTCs) and turns off the check engine light instantly
• Upgraded Diagnostic Accuracy — Advanced code lookup helps you understand exactly what's wrong with plain-English descriptions
• Wide Vehicle Compatibility — Works with all OBD2-compliant cars, trucks, and SUVs (1996 and newer, US market)
• Durable PVC Construction — Red and black rugged PVC housing designed for workshop and roadside use
• I/M Readiness Check — Quickly verify if your vehicle is ready to pass emissions testing
• Live Data Stream — View real-time sensor data to diagnose intermittent faults more effectively
• No Batteries Needed — Powered directly through your vehicle's OBD2 port for instant, reliable operation
• Plug-and-Play Setup — No software installation required; simply plug in and start scanning

What's in the Box

• 1 × MS309 OBD2 Diagnostic Scanner
• 1 × OBD2 Cable
• 1 × User Manual

Technical Specifications

• Model: MS309 (Upgraded Version)
• Connector: OBD2 / EOBD 16-pin
• Display: Built-in LCD screen
• Housing Material: Durable PVC (Red & Black)
• Power Supply: Via OBD2 port (no batteries required)
• Wireless: No (wired connection)
• Origin: Mainland China

Why You'll Love It

Save hundreds of dollars on dealership diagnostic fees. The MS309 OBD2 scanner empowers you to diagnose problems yourself, decide whether a repair is urgent, and walk into any auto shop fully informed. It's compact enough to keep in your glove box and ready to use anytime, anywhere.

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Learn More About Vehicle Emissions & OBD Standards

For more information on OBD2 standards and vehicle emissions testing, visit the U.S. Environmental Protection Agency – OBD Information.

Frequently Asked Questions

Q: What vehicles is the MS309 OBD2 scanner compatible with?

A: The MS309 OBD2 scanner is compatible with all OBD2-compliant vehicles manufactured in 1996 or later in the United States, including cars, light trucks, and SUVs. It supports all five OBD2 protocols: CAN, ISO9141-2, KWP2000, PWM, and VPW.

Q: Do I need to install any software or app to use the MS309?

A: No, the MS309 OBD2 scanner is completely plug-and-play. Simply plug the cable into your vehicle's OBD2 port (usually located under the dashboard on the driver's side), and the scanner powers on automatically — no software, apps, or batteries needed.

Q: Can the MS309 OBD2 scanner turn off my check engine light?

A: Yes. After reading and reviewing the Diagnostic Trouble Codes (DTCs), you can use the MS309 to erase the codes and reset (turn off) the check engine light directly from the device.

Q: Will this scanner work for an emissions (smog) test?

A: Yes, the MS309 includes an I/M Readiness check that lets you verify whether your vehicle's emission monitors have completed their self-tests, so you can determine if your car is ready to pass an emissions inspection before heading to the testing station.