Tool comparison
Consult is Nissan's proprietary onboard diagnostic system and interface, evolving through Consult-I (pre-OBD, 14-pin), Consult-II and Consult-III/plus (the modern factory scan platform). It reads and clears trouble codes, streams live sensor data, performs actuator and active tests, and handles ECU/component programming and configuration across Nissan and Infiniti vehicles. Independent tools and cables — Consult USB interfaces, apps and aftermarket clones — also speak the Consult protocol for diagnostics and datalogging on older Nissans. Tuners often use Consult logging alongside tuning tools to capture factory sensor data. Consult-III plus is the dealer-level platform for current models. It is a diagnostic and programming system, not an engine-tuning or standalone-ECU product.
Techstream is Toyota's official dealer diagnostic software for Toyota, Lexus, and Scion vehicles. Running on Windows with a Mongoose MFC or Toyota MVCI J2534 interface, it provides full-system DTC read/clear, live data, freeze-frame, bi-directional active tests, and a wide set of service and customization functions — such as hybrid battery diagnostics, zero-point/steering-angle calibration, brake-bleed routines, key/immobilizer registration, and dealer "Customize" settings. It also supports ECU reflashing/calibration updates on supported models. Independent Toyota specialists use Techstream where generic scanners cannot reach Toyota-specific systems or perform coding. It is the reference tool across a very large range of Toyota/Lexus model years and hybrid systems, and is regularly updated with new vehicle definitions.
Nissan Consult (OEM Diagnostic, Nissan) and Techstream (OEM Diagnostic, Toyota Motor Corporation) compete in the same space, so the choice comes down to coverage, workflow and price for your specific ECUs. Nissan's factory diagnostic protocol and interface (Consult I/II/III) Toyota/Lexus/Scion dealer diagnostic and reprogramming software
Whichever you flash with, Softechpro Solutions auto-applies DPF/EGR/AdBlue/DTC-off modules and Stage patterns with automatic checksum correction across ~1,400 firmwares on Windows & macOS — the fast way to get the actual file edits done.
See SoftechproMore on Nissan Consult