Codes
Read, explain, prioritize, and clear diagnostic trouble codes with live data context — on-device rules on Android, Haiku polish on Windows.
Features
Fred combines shipped OBD workflows — codes, live PIDs, readiness, voice, morphing gauges — with Pro features (freeze frame, Mode 6, actuators, body controls) marked coming.

Shaded items are live today. Pro · coming features are on the roadmap — freeze frame, Mode 6, actuators, and body controls land with vLinker on Windows Pro.
Read, explain, prioritize, and clear diagnostic trouble codes with live data context — on-device rules on Android, Haiku polish on Windows.
Watch RPM, speed, load, coolant, trims, MAP, MAF, O2 sensors, voltages, temperatures, and adapter-supported signals.
See the moment a fault set — load, temp, speed, fuel status, trims. Not in 1.0.0-beta yet.
Understand emissions monitor readiness and what still needs a drive cycle.
Onboard test results for misfires, catalysts, O2 sensors, evap — planned for Windows Pro after beta.
Command supported actuators in a controlled workflow — Windows Pro, after vLinker integration.
Voice or UI commands for windows, locks, mirrors, HVAC — not shipped in 1.0.0-beta.
Live PID dashboards that reshape as you focus — Android beta today.
Anthropic Haiku refines Fred’s first-person replies after OBD tools finish — server-side on desktop only.
Hold to talk on Android (rules) and Windows (Haiku polish). Ask for codes, live data, and readiness without hunting menus.
Compatibility matrix
Shipped adapter support for FRED 1.0.0-beta.
| Connection | Best for | Examples | Notes |
|---|---|---|---|
| Bluetooth / BLE | Android app, quick checks | vLinker BLE, OBDLink, ELM-style adapters | Best for driver-friendly diagnostics and voice Q&A. |
| Wi‑Fi | Broad adapter compatibility | Wi‑Fi OBD-II adapters | Useful where Bluetooth pairing is limited. |
| USB | Windows Pro stability | USB OBD-II / J2534-style workflows | Strong option for shops and long data logging sessions. |
| vLinker-class | Enhanced vehicle access | vLinker FS/MC+/compatible interfaces | Enhanced data, HS/MS-CAN, and deeper controls depend on model and vehicle. |