OEM Diagnostic
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.
Consult is Nissan's OEM diagnostic layer for reading codes and live data; Softechpro is a firmware reflash and DTC-off/Stage toolset with automatic checksum correction. They can work in sequence — diagnose with Consult, then address supported calibration items with Softechpro — though Softechpro's coverage is weighted toward European platforms.
See Softechpro plansTry the file service