New Engine Code Reader

Here is the bit that Tim neglected to post - Link to Device

Yeah. There are a number of smartphone apps that will display the data.

Haven't tried it; gone down the ScanGauge II route. It's wired which is not as convenient but the display is compact and readable in the sun.

There are also hordes of these on ebay below $20.

The Chinese make a lot of good OBD readers that are very comprehensive and which come with a very large range of vehicle electronic repair information loaded into them.

If you just buy a cheap code reader, all you get is the ability to identify fault codes and not much else.
That's about on a par with buying a cheap copy of an encyclopedia and finding out you've only been supplied with books that cover A to C.

The better quality OBD readers supply you with all the repair info needed to understand and identify all the electronic components, how they all work together, and what could be creating individual fault codes.

There's a lot of rorting in the pricing of OBD readers. A mate wanted a comprehensive model, because he's fixing more and more late model vehicles that people have abandoned because the stealers wanted thousands to fix electronic faults.
A typical comprehensive OBD reader unit was priced locally at $7000.

He purchased a virtually identical unit directly off the Chinese for under $900.
He's wrapped in it, it's loaded with all the electronic repair info on all Australian models, and he paid for it within a month with the increased repair ability.

Cheers, Ron.