850 OBD-II is a specialized diagnostic and programming application designed for Volvo vehicles from 1996-2000, specifically P80 models, with support for P1 and P2 platforms. The app works in conjunction with an ELM327 Bluetooth/Wi-Fi/USB dongle to provide advanced vehicle diagnostics beyond standard OBD-II capabilities. It allows users to directly read individual modules to diagnose issues, making it a powerful tool for car enthusiasts and mechanics alike.

The application's standout feature is its ability to exceed typical OBD-II functionalities by offering direct access to various vehicle modules, aiding in pinpointing problems that may not be covered by generic fault codes. This makes the app particularly useful for diagnosing complex systems within supported Volvo models, including ABS, TCM, ECM, ECC, and more. With this app, users can reset service lights, read and clear fault codes, view real-time sensor data, and even perform advanced programming tasks such as injector testing and remote programming.

850 OBD-II offers a comprehensive suite of features tailored for Volvo owners and mechanics. The app supports a wide range of functionalities, including resetting service lights, reading and clearing fault codes (DTC), accessing live sensor data, and retrieving detailed system information like part numbers and configurations of ECUs. Additionally, it provides advanced commands for specific tasks such as injector testing for Motronic M4.4 systems and dynamic timing adjustments for TDi fuel pumps in MSA15.7 systems.

One of the key strengths of 850 OBD-II is its compatibility with multiple Volvo platforms, including S40/V40 up to 2004, S70/V70/XC70, C70 up to 2004, and P2 platform models from 2000 onwards. Each supported model benefits from tailored diagnostic and programming options, ensuring accurate and effective results. Furthermore, the app includes a terminal feature for sending custom handwritten commands via the ELM327 interface, allowing experienced users to execute specific diagnostic routines or tests.

The 850 OBD-II app provides users with the ability to access detailed vehicle information beyond standard OBD-II capabilities. This includes reading individual modules directly, which helps in diagnosing problems more accurately.

With support for a wide range of Volvo models and year variations, the app allows users to retrieve specific data such as part numbers of ECUs and configurations. This feature is crucial for mechanics and car enthusiasts who need precise information for maintenance and repairs.

By using an ELM327 bluetooth/Wifi/USB dongle, the app can communicate with various vehicle systems like ABS, TCM, ECM, and more. This direct communication enables users to get comprehensive insights into their vehicle's health and performance.

Overall, this functionality ensures that users have all the necessary information at their fingertips, empowering them to make informed decisions about their vehicle's upkeep and troubleshooting.

While the 850 OBD-II app itself is likely offered at a certain price point, it promotes price transparency by clearly stating its requirements and limitations upfront. Users are informed that they need an ELM327 dongle with firmware version 1.4b or greater.

The app does not hide behind ambiguous promises; instead, it explicitly lists compatible vehicle models and systems. This clarity helps users understand whether the app will work for their specific vehicle before making a purchase decision.

Additionally, the app provides advanced commands and features such as Injector testing and TDi Fuel pump Dynamic Timing without additional costs. These functionalities add value by offering professional-level tools within a single purchase price.

By detailing both the capabilities and constraints of the application, potential buyers can assess the true cost versus benefit, ensuring there are no hidden surprises post-purchase.