FOXWELL NT301 OBD2 Scanner
Affordable OBD2 code reader for cars and trucks. Read and clear check engine codes, view live sensor data, and pass smog inspections.

FOXWELL NT201 OBD2 Scanner with Live Data & I/M Readiness
OBD2 code reader with real-time live data graphs and I/M readiness checks. Diagnose check engine lights quickly at home or in the shop.
Amazon price checked Jun 14, 2026
Read & Clear Check Engine Light: When your dashboard lights up with that check engine light, FOXWELL NT201 puts the answers in your hands. Plug it into your vehicle’s OBD2 Scanner, and within seconds you’ll see exactly what triggered the warning. This engine code reader allows you to read the fault code, understand the issue, and after making repairs, clear the code to turn off the light. No more expensive diagnostic fees at the repair shop—just straightforward information when you need it most.
Compatible with Cars Since 1996: FOXWELL NT201 code reader works with virtually all 1996 and newer gasoline-powered vehicles sold in the United States, including sedans, SUVs, light trucks, minivans, and hybrids that use the standard 16-pin OBD2 connector. This car reader diagnostic for all cars is designed specifically for engine and emissions diagnostics. It does not work with electric vehicles, 24V heavy-duty trucks, or non-engine systems such as ABS brakes, airbags, or transmission.
Plug-and-Play Simplicity with Lifetime Free Updates: Designed with everyday car owners in mind, FOXWELL NT201 requires no special skills or technical background. Simply locate your vehicle's OBD2 scanner connection (usually under the dashboard), plug in the scanner, and power it on—no external power source or battery required. You pay a single price and get everything included—no monthly fees, no surprise charges. Plus, the scanner comes with lifetime free updates to ensure it remains compatible with newer vehicle models as they hit the road. It's a one-time investment that keeps working for you year after year.
One Key Emissions Readiness Check: Worried about passing your state’s smog check or annual inspection? This car scanner takes the guesswork out of the process with a dedicated hotkey for I/M readiness testing. Press it once, and the scanner immediately shows you whether your vehicle’s emission monitors are ready for testing. The color-coded indicator lights (red/yellow/green) give you a clear visual status at a glance—no menu diving, no technical know-how required. Use it before heading to the testing station and avoid the disappointment of being turned away.
Live Data & Oxygen Sensor Diagnostics: This diagnostic scanner displays live data as you drive or idle, providing insight into your vehicle’s health. Monitor RPM, coolant temperature, intake air temperature, oxygen sensor readings, and other key parameters on the crisp 2.4-inch color screen. Whether tracking down intermittent issues or monitoring engine performance, live data helps you catch small problems before they become costly repairs. The scanner also supports live O2 sensor test mode for vehicles using the CAN protocol, allowing you to analyze exhaust gas oxygen content and evaluate engine efficiency—a valuable vehicle diagnostic tool for fuel mixture and catalytic converter issues.
Ratings and reviews are sourced from Amazon.com and may change over time.
Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. worth it. doesn't have all the bells and whispers but good diagnosis tool. easy to use a kid can do it. connect under the dashboard for those who didn't know lol.
Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. My husband loves it, works great
Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. This is a great tool to keep in you car, I've never used a scanner but this scanner was self explanatory plug it in hit ok and it will give you the codes that are causing your check engine light to light up, you can also press on the code and then scanner will give you a brief description of the problem and how to fix it, it also will clear all codes for a fresh scan to see if you have fix the issues great easy tool to have and the software updates are free they supplied the correct cord to plug into your computer or laptop to install the new updated firmware when needed. I've dropped it a few times the durability is awesome not a scratch on it..
Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. Great product , perfect diagnostic,easy to use
Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. Nice code reader
Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. Awesome. Works great. So easy even a caveman can use it
Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. Works well enough for me, but not for all codes. I'm not a mechanic, so it does what it does for the price.
Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. The Foxwell Code Reader is an excellent diagnostic tool for anyone who wants reliable vehicle insights without the complexity or cost of professional-grade scanners. Whether you’re a DIY car owner or a seasoned mechanic, this device delivers fast, accurate results in a user-friendly package. Setup is simple—just plug it into the OBD-II port and you’re ready to go. The screen is clear and easy to read, and the menu navigation is intuitive, even for beginners. It quickly pulls engine codes, provides clear descriptions, and allows you to erase codes with confidence after repairs. One of the standout features is its solid build quality and dependable performance across a wide range of vehicles. The Foxwell scanner doesn’t rely on apps or Bluetooth connections, which means no pairing issues or phone compatibility problems—just straightforward diagnostics when you need them. Overall, the Foxwell Code Reader offers great value, accuracy, and ease of use. It’s a smart investment for anyone who wants to save time and money by diagnosing vehicle issues at home. Pros: • Easy plug-an