aha, Bluetooth OBD bought but not reading anything from the car. Annoyingly I cannot see the status LEDs on the bluetooth box as they face the pedals...
Time to get the tools out. :speechless-smiley-5

Yes you won't see the lights, but if you wiggle the box you should find it gets powered-up & then it can connect to your smartphone via bluetooth.

Are you sure you've pushed it in far enough so it connects to the socket?

OBD2 device for V90 1997
 

I now have both the ELM 327 and Streetwise OBD2 devices. I am not sure which is likely to be best, but it seems the ELM device is bluetooth and requires a computer (smartphone, tablet, laptop or PC) to read the faults etc. Whereas the Streetwise device obtained from Euro Parts gives a readout, but cannot send details to a computer as it is not bluetooth. I'll hang on to both and see how they do although at the moment I do not have a fault as far as I know!. There is no usb socket on the Streetwise one so cannot see how data can be sent to a computer. If anyone knows how it can I'd be grateful for this information.

As above all I did was buy the two items from ebay and the dongle styled one connected to my phone via a free app over bluetooth. That read all the relevant codes and would clear them too.

If you've got the ELM version I purchased then you should find that the above steps work for you too.

Not sure what's up with what you've got?

Hi guys, I got a an '01 V40 1.8l, Manual. I got Elm327, connected to the obd port. The scanner is powered on, but the app on my android phone is not communicating/connecting with it. Any heads on?