What can the FOXWELL NT201 read?

The NT201 reads and clears engine OBD2 codes, displays live data, runs I/M readiness monitors, and shows freeze frame data for 1996+ vehicles.

Does the NT201 support bidirectional tests?

No. The NT201 is a basic code reader. For active tests and module commands, consider the NT301, NT624 Elite, or NT809BT.

FOXWELL NT201 OBD2 Code Reader

Name: FOXWELL NT201 OBD2 Scanner with Live Data & I/M Readiness
Brand: FOXWELL
SKU: B01N6RKE29
Price: 39.99 USD
Availability: InStock
Rating: 4.5 (9997 reviews)

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.

4.5 (9997 Amazon ratings)

Price on Amazon$39.99

Amazon price checked Jun 14, 2026

Buy on Amazon

Overview

The FOXWELL NT201 is an entry-level OBD2 code reader for everyday drivers who need to understand why the check engine light is on.

Whether you are troubleshooting a check engine light, preparing for an emissions test, or performing scheduled maintenance, the NT201 gives you the module access and service functions you need without booking a dealer appointment. On-screen menus walk you through each step, and stored scan reports help you track repairs over time.

Coverage: Engine only. Connectivity: USB. Updates: Free.

Key Features

Read and clear engine diagnostic trouble codes (DTCs) — includes pending and permanent codes with plain-English definitions
View live sensor data and freeze frame snapshots — see exactly what the ECU recorded when the fault occurred
Run I/M readiness monitors before emissions testing — verify all monitors have completed before your smog check
Retrieve VIN and basic vehicle information
Compact handheld design — plug in and diagnose in seconds

What You Can Diagnose

The NT201 helps you identify root causes faster by reading fault codes, live sensor values, and module status across the systems it supports:

Check engine light (MIL) and powertrain fault codes
Oxygen sensor, fuel trim, and emissions-related DTCs
Evaporative emissions (EVAP) system faults
Catalyst efficiency and misfire monitor status
Freeze frame data captured at the moment of failure

How to Use This Tool

Plug the NT201 into your vehicle's 16-pin OBD2 port (usually under the dashboard). Turn the ignition to ON — the tool powers from the vehicle and guides you through reading codes in seconds. Use the built-in DTC library to understand each fault, then clear codes after repairs and re-scan to confirm the fix.

Vehicle Compatibility

Works with most 1996 and newer gasoline cars, SUVs, and light trucks sold in the U.S. with a standard 16-pin OBD2 port. Engine/emissions diagnostics only — does not scan ABS, SRS, or transmission modules.

Always verify that your exact year, make, model, and engine combination is supported before purchase — especially for service resets, bi-directional tests, and brand-specific modules. OBD2 port location is typically under the driver-side dashboard on U.S. vehicles from 1996 onward.

Who Should Buy This

DIY drivers, used-car buyers, and anyone who wants a simple check-engine code reader without dealer fees.

If you regularly work on your own vehicles, run a small repair shop, or buy used cars to flip, the NT201 pays for itself quickly compared to per-visit dealer diagnostics.

Why Choose FOXWELL

For everyday check-engine diagnostics, FOXWELL code readers deliver dealer-level code definitions and live data without a monthly fee. They are easier to use than phone apps, work offline in any garage, and pay for themselves after a single avoided dealer diagnostic visit.

Connectivity & Software Updates

USB connection to vehicle OBD2 port. Free firmware updates via FOXWELL software. Keep firmware current to maintain the widest vehicle coverage and access to newly added service functions.

4.5 (9997 Amazon ratings)

Ratings and reviews are sourced from Amazon.com and may change over time.

★★★★★ Good price, Good tool for simple jobs. Anthony Fiore May 1, 2026

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.
★★★★★ Great item Karen Gilmer June 3, 2026

Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. My husband loves it, works great
★★★★ ☆ Scanner works great ! Great value for the money Ricky Chavez July 15, 2024

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..
★★★★★ Easy to used, and carry Jorge March 30, 2026

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
★★★★★ Good value Brian Johnson April 23, 2026

Brief content visible, double tap to read full content. Full content visible, double tap to read brief content. Nice code reader
★★★★★ Awesome Chuck Hill February 28, 2026

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
★★★ ☆☆ Does work for the price, but doesn't work for all codes. Sonopap May 26, 2026

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.
★★★★★ Easy to use and understand Dan December 23, 2025

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

FAQ

What can the FOXWELL NT201 read?: The NT201 reads and clears engine OBD2 codes, displays live data, runs I/M readiness monitors, and shows freeze frame data for 1996+ vehicles.
Does the NT201 support bidirectional tests?: No. The NT201 is a basic code reader. For active tests and module commands, consider the NT301, NT624 Elite, or NT809BT.