# OBD2 PID Knowledge Site > Free, curator-reviewed reference for OBD-II / UDS signals on European hybrid (HEV) and plug-in hybrid (PHEV) cars. Standard PIDs vs manufacturer requests, adapters, logging apps, and vehicle platforms. The public hostname is obd2pid.com. This site is **not** a log viewer, charting tool, or trip-file analyser. ## What this site is A structured knowledge base. It explains what a PID is, which adapter/app combinations people use, and which signals are known on specific EU HEV/PHEV platforms. One curator publishes every catalog row. ## What this site is not - Not a log viewer, charting tool, or trip-file analyzer - Not a paid product and not a store - Not an open wiki: visitors cannot publish catalog data themselves ## How the catalog is updated One curator reviews and publishes all catalog rows. Visitors may submit a structured tip or leave page feedback (helpful / unclear / report error). Tips stay pending until they are checked and merged. Contact: tip@obd2pid.com ## Main sections - / — purpose and how to use the site - /about — curator model and domain note - /privacy — what the tip form and feedback store - /pids — SAE J1979 standard PIDs (number, name, unit, formula, explanation) - /standards — J1979, J1962, ISO 15765-4, J2012, ISO 14229, EOBD, WWH-OBD - /signals — semantic measurements (battery SOC, HV voltage, …) - /platforms — vehicle platforms (EU HEV/PHEV, listed A–Z in English) - /adapters — ELM327-class and related adapters - /apps — logging apps and their export column labels - /search — find a PID, standard, signal, platform, adapter, or app - /contribute — submit a tip (single intake channel) - /sources — source tiers and confidence - /explain/pid — standard vs manufacturer-specific PIDs - /sitemap.xml — all published catalog URLs ## Out of scope Pure battery-electric (BEV) diagnostics. Uploading CSV trip logs. Open community editing (GitHub PRs, Discord wikis) as official catalog paths. ## Data Published catalog only. No vehicle log files are stored. Contribution forms send structured tips, not raw logs.