FOXWELL NT301 Plus OBD2 Scanner 12V

This 2-in-1 diagnostic tool combines engine code reading with a professional battery tester so you can diagnose check engine lights and assess battery condition without swapping devices. The FOXWELL NT301 Plus speeds up roadside or garage checks by showing live engine data and a clear battery health readout, making troubleshooting more straightforward for DIYers and technicians alike.

Key Points

The unit reads and clears Diagnostic Trouble Codes and shows live data such as RPM, coolant temperature, and fuel trim in both text and graph formats. It adds a full battery analyzer to the previous NT301 feature set, measuring state of health, state of charge, CCA, cranking voltage and cranking time, with results flagged as Good or Replace for quick interpretation. The larger 2.8 inch color display improves readability compared to smaller screens and built-in red-yellow-green LEDs provide instant I/M readiness feedback with audio prompts. Compatibility covers most U.S. vehicles from 1996 and newer according to standard OBDII protocols and it records and plays back data for deeper troubleshooting.

Technical Specifications

• Name: FOXWELL NT301 Plus
• Display: - 2.8 inch color screen
• Compatibility: - Vehicles with 16-pin OBDII port, U.S. models 1996 and newer
• Battery test functions: - SOH, SOC, CCA, cranking voltage/time, starter and charging analysis
• Protocols supported: - ISO9141, KWP2000, J1850 VPW, J1850 PWM, CAN

Benefits

Real-time monitoring helps catch intermittent faults that only appear under certain conditions, and the ability to record and print diagnostic reports adds utility for workshop workflows. The battery analyzer is said by the manufacturer to deliver higher accuracy at low temperatures, which reduces guesswork in cold weather starts. The combination of code definitions on-screen and LED readiness indicators simplifies pre-inspection checks so you can identify failing sensors without searching online.

Usage Recommendations

Connect the OBDII cable firmly and follow on-screen prompts to run both engine and battery checks. For battery testing ensure clamps have a solid connection and that the vehicle is stable during cranking tests. Consider that special or manufacturer-specific protocols may require an extra adapter, and this tool does not support pre-1996 non-OBDII vehicles or certain models from brands that use proprietary connections.