Engine management light on

[westm1ll]

Hi.

Saab 9-3 convertible 2008 1.9Tdi 70,000 miles

First post so I hope it's a clear and relevant question.

Engine management light came on the other day and on tick over it was surging. I revved a bit and clouds of smoke came out of the exhaust, ( not blue smoke ). It cleared pretty quick and then ticked over smoothly.
I'm hoping it's not too drastic but would love to get my own ODBII reader to read and clear codes etc:

Firstly, any idea what the problem could be and secondly, any idea what a good reader would be for this and future problems. I also have a 2009 9-3 and the garage that could read codes on that, cannot read codes on the 2008.

P.s. I can't remember what it's called but I think the ) DPF, EPG or something like that has been deleted.

Thanks for any advice.

[Dave T]

Several of the major auto parts shops in the United States lend and OBDII reader but Herfordshire is too far away! These shops, like O'Reilly Auto or Autozone, let you use it in the parking lot.

I have an old Scangauge that, I think, has some reader capability.