Quote:
Originally Posted by GTO  So basically for novelty? |
Nope not novelty.
An unscrupulous workshop can tell you that your car has blown something major and you need to replace it for 10K. If you have this you plug it in and know whats wrong.
Error codes can tell a lot about whats going on in the vehicle.
Normally your alternator not fully charging under AC and headlight load can leave you stranded late at night, but if you have such a thing with you, you will know about this problem much earlier.
In the US market it costs 50$ just for a scan of the engine computer to find out whats wrong, thats what its intended for.
It can also help you decide whether to go to authorized service center of local mechanic(choked air filter, or blown O2 sensor)