TD300 Code Reader


TOPDON TD300 is an OBDII code reader specially designed for technicians to complete entry-level diagnostic tests. Featuring a classic design and backlit LCD display, this code reader provides technicians with an extremely efficient way to read and clear codes, turn off check engine lights, and check the I/M readiness status.


This entry-level code reader is specially designed for convenient car health status checking, reading, and clearing codes (turn off MIL)

Instead of manually identifying the vehicle's model and year selection, this OBDII scanner can automatically retrieve the vehicle identification number (VIN) for faster diagnosis

  • Mini-size allows you to store code reader anywhere
  • Vast vehicle coverage works on most 1996+ vehicles
  • Affordable price point
  • FAST CODE RETRIEVAL: This entry-level code reader is specially designed for convenient code reading and clearing. It doesn’t matter if you’re unfamiliar with the codes detected, you can easily figure out problems with over 7000 code definitions included in the user manual
  • EASY AND SIMPLE DIAGNOSIS: Instead of manually selecting the vehicle model and year, this OBD II scanner can automatically retrieve the VIN for faster diagnosis. To save time checking the emission system, it also includes an I/M readiness status check
  • COMPREHENSIVE COVERAGE: If your vehicle uses CAN or OBDII protocols, this is a perfect choice for basic vehicle diagnosis. It works on most 1996 US-based, 2000 EU-based and newer vehicles
  • HANDHELD CONVENIENCE: This portable code reader is designed to be compact and easy to carry. Additionally, there is no battery needed to power it. It uses power from the vehicle’s 16-pin OBD II port
  • ADDITIONAL SERVICES: The TD300 comes with a worry-free 1-year warranty. If you ever have any questions, feel free to contact us
  • READING CODES: Shows the detailed description of current Diagnostic Trouble Codes (DTC); Retrieve generic (P0, P2, P3, and U0), manufacturer specific (P1, P3, and U1) and pending codes
  • Erasing Codes: Turns off Check Engine Light (MIL), clears codes and reset monitors
  • I/M READINESS STATUS: Shows whether the various emissions-related systems on the vehicle are operating properly and ready for inspection
  • RETRIEVE VEHICLE INFORMATION: Retrieves specific data and information about your vehicle including the VIN, vehicle’s manufacturer, age, model, body type and engine code
  • Display: Backlit LCD, 2-line, 8 characters – white and black screen
  • Thoughtful design: The OBD II code reader is equipped with a long OBD II cable (32 inches) making it easier to use
  • Mini-sized: It’s easy for you to store and carry with a mini-sized and lightweight design; you can store it in a glove box for easy access
  • Cost-effective: This inexpensive code reader is designed with basic OBD II functions for technicians with the tightest budgets

Display: Backlit LCD, 2-lines, 8 characters
Operating Temperature: 32℉- 122 F
Storage Temperature: -4℉-158℉
Power: 10.0 to 15.5 Volts provided via vehicle battery
Dimensions: 4.7 x 2.6 x 0.83 Inches
Net Weight: 0.45 Lbs
Gross Weight: 0.50 Lbs.

No software updates
Only English supported
Only for 12V vehicles


1 Main Unit
1 User Manual


One Year Warranty