T31
OBD II Trouble Code Diagnostic Tool

leagend T31 OBD II Scanner โ€” Check Engine Light Code Reader & Diagnostic Tool

$39.99 USD
$21.60 USD $39.99 USD
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Overview

The leagend T31 OBD2 Scannerย is a compact and easy-to-use automotive diagnostic tool that helps you read and understand Check Engine Light problems without immediately visiting a repair shop. It can read and clear engine trouble codes, check transmission-related codes, display real-time vehicle data, and provide useful diagnostic information to help you make smarter maintenance and repair decisions.

Key Features

Read & Clear Check Engine Codes

  • The leagend T31 quickly reads diagnostic trouble codes (DTCs) stored in your vehicle's ECU and provides code definitions to help you understand what may be causing the problem. After the underlying issue has been repaired, you can use the tool to clear codes and reset the Check Engine Light.

Engine & Transmission Diagnostics

  • Go beyond basic engine code reading. The leagend T31 supports dual-system inspection, allowing you to check both the engine system and transmission system on compatible vehicles.

Live Data Stream with Up to 249 Parameters

  • Monitor real-time ECU information while the vehicle is running. The leagend T31 can display up to 249 live data parameters, including information such as engine speed, coolant temperature, throttle position and other vehicle operating data.

Freeze Frame Data

  • See the vehicle conditions recorded when a diagnostic fault occurred. Freeze-frame information can help you better understand what was happening when the fault code was triggered.

I/M Readiness Check

  • Check your vehicle's emissions-related readiness status before an inspection. The leagend T31 helps you see whether the required monitors are ready and can help you identify potential issues before heading to an emissions or smog test.

Easy-to-Understand LED Status Indicator

  • The built-in three-color LED indicator provides a quick visual indication of vehicle diagnostic status:
  • Green: Normal status
  • Yellow: Potential or pending issue
  • Red: Fault detected
  • This makes the leagend T31 easier to use, even if you are new to automotive diagnostics.

Read Vehicle Information

  • Retrieve important vehicle information directly through the OBD II connection, including:
  • VIN (Vehicle Identification Number)
  • Calibration Identification (CALID)
  • Calibration Verification Numbers (CVN)

Wide OBD II Protocol Support

  • The leagend T31 supports major OBD II communication protocols, including:
  • CAN
  • VPW
  • PWM
  • ISO 9141
  • KWP2000

Broad Vehicle Compatibility

  • The leagend T31 is designed for compatible OBD II/EOBD cars, SUVs and light trucks. It is a practical choice for everyday vehicle owners who want convenient access to basic diagnostic information.

Simple Plug-and-Use Design

  • Simply connect the leagend T31 to your vehicle's OBD II port and follow the on-screen instructions. Its compact design makes it easy to keep in your glove box, garage or toolbox for everyday vehicle checks and unexpected Check Engine Light situations.

Specifications

Language
English, German, Spanish, French, Italian, Polish, Finnish, Dutch, Russian, Portuguese
Display
128x64 monochrome screen
Supported Protocols
CAN, VPW, PWM, ISO9141, KWP2000
Supported Models
OBD II/EOBD car, SUV, light truck
Color: Black

FAQ

The leagend T31 can read and clear engine trouble codes, provide DTC definitions, display live ECU data, view freeze-frame information, check I/M readiness, read vehicle information and inspect compatible engine and transmission systems.
Yes. The leagend T31 can clear stored diagnostic trouble codes and reset the Malfunction Indicator Lamp (MIL) after the underlying problem has been properly addressed.;Important: Clearing a code does not repair the cause of the problem. If the fault remains, the Check Engine Light may return.
Yes. The leagend T31 supports dual-system inspection on compatible vehicles, allowing users to check both engine and transmission systems.
Live data allows you to see real-time information reported by the vehicle's ECU. The leagend T31 supports up to 249 ECU operating parameters, depending on the vehicle, including parameters such as engine RPM, coolant temperature and throttle position.
Freeze-frame data records vehicle operating conditions at the time a diagnostic fault was detected. The leagend T31 allows you to review this information to better understand the circumstances surrounding a fault code.
Yes. The leagend T31 provides an I/M readiness check that helps you determine whether supported emissions monitors are ready for inspection.
The leagend T31 is designed for compatible OBD II/EOBD cars, SUVs and light trucks. Vehicle compatibility depends on the vehicle's OBD II/EOBD system and supported functions.
The leagend T31 supports CAN, VPW, PWM, ISO 9141 and KWP2000 communication protocols.
No separate battery or charging is required for normal operation. The leagend T31 receives power through the vehicle's OBD II connection.
Yes. The leagend T31 is designed with a straightforward interface and LED status indicators, making it suitable for both first-time OBD2 scanner users and experienced DIY car enthusiasts.
No. The leagend T31 is an OBD II diagnostic tool designed primarily to access supported ECU diagnostic information. It does not replace a professional diagnostic system or mechanical inspection, and available functions can vary by vehicle.
A diagnostic trouble code tells you what system or condition has been detected by the vehicle's computer. It does not necessarily identify the failed component itself. Use the leagend T31 to understand the diagnostic information, then inspect or repair the underlying cause before clearing the code.

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