Originally Posted by
donh54
I may be barking up the wrong tree (it's happened before!) but it looks a lot like some of the messages I was getting with earlier generation OBD11 scanners on various vehicles (all British/Euro).
The messages are usually a result of the reader getting a response it is not expecting from the vehicle, given the OBD protocol it is using may not be supported by the vehicles' ECU.
The OBD11 compliance requirement was initiated in the USA from around 1980-1981. It has had many variants, but was initially setup to allow testing of emission control (mandated from about 1991) of all cars produced or sold in the USA.
Since V8 Discos/RRs were the only ones sold in the USA, they were the only ones that had to meet that requirement.
Then, just to be difficult, around 2003 the European On Board Diagnostic standard had to be applied to all diesel cars sold in Europe.
Then, in 2008, the USA mandated the ISO 15765-4 CAN Bus as a requirement for all cars sold there.
Since the biggest market, by far, for auto-related items is the USA, most readers (unless specified otherwise) are set up to align with the US standards. Many I have tried over the years simply state they cannot establish contact with the ECU, others come up with outlandish values (210 psi of boost on a naturally aspirated motor comes to mind!).
As soon as I saw things like "Tacho Drive Over Temp Fault Active" I weondered where the hell that reading came from. As far as I can recall, I have never in my life seen a tacho drive that has a temp sensor attached to it!
It would be interesting to find someone nearby with a Nanocom, or IID Tool (both well known to work with LR vehicles) and see what sort of messages they come up with.
