There may be an issue with the pcm on the subaru. It may not be the tool but the car may be the issue
May, 19, 2012 AT 1:52 AM
Call a subaru dealer
A non-stock ECU unit may be already installed if you got the car used. Also, the Puegot is a Euro-only car, while the vast majority of Subarus are sold in the North American market. It is possible that the the Subaru uses a North American-spec engine and electronics suite, especially if it has a 2.5L or turbocharged motor. Japanese-spec models share most of the Euro-spec components, so the engine could be a Euro/Japanese destined engine, especially if it is 2.0L or under, or if it is a diesel. I would contact the interface manufacturer and get the exact engine code from the Subaru to check for compatibility. However, I think you are probably right about the non-stock ECU so check there first.