Free Mac app for diagnosing older Outbacks and Legacy wagons (2014 and earlier)
Sharing something I built that might be useful if you keep an older Outback on the road and have a Mac. SubieScope is a free, open source app that reads the engine ECU directly over Subaru's SSM protocol, with a cheap KKL USB cable. No Windows laptop and no drivers.
What it is good for:
- Check engine light: it reads the codes, explains them in plain English and lets you clear them
- Step by step tests for the catalyst (P0420), the O2 sensors, thermostat and warm-up, the radiator fan, battery and charging, and misfires
- Live gauges and logging, handy for keeping an eye on temperatures or fuel trims on a long trip
It works with 1999 to 2009 Outbacks and Legacys (BE/BH and BL/BP) and with most 2010 to 2014 ones. Newer cars only talk CAN, so there it uses a Bluetooth OBD-II adapter and shows the standard values and codes.
More info and the download: https://subiescope.marvinvisser.nl/
It builds on the FreeSSM and RomRaider projects. I only have my own 2008 GRB STI to test on, so reports from Outback owners are very welcome.
u/Intrepid-Ad4494 — 11 days ago