If you have a Diesel HD truck - Code reader

agesilaus wrote:

Bedlam wrote:
I like the ScanGauge II because you can add custom parameters to it and the cost is reasonable for a standalone device. Many people are going with an OBDII dongle and smart phone with software to monitor their vehicles which is another option. Did you see this thread?

https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/30074765.cfm

Thanks but look at the first reply on that thread. I checked a number of the readers mentioned and none claim to read diesel specific codes. At least the ones I checked before giving up.

it does. I had one on my 2004.5 duramax and have one on my 2015 duramax. It will read all codes that trigger are stored or pending. Basically any code reader will read codes that are stored. It gave me the code that indicated my grid heater was not working, a quick trip to the dealer and a new grid heater under warranty.

Depending on vehicle it can do other things. On GM it will read balance rates, boost, EGT, soot level, distance since regen, and a bunch more.

Now if what you are looking for is something that gives live data and will do what factory service systems do, that's another story. These systems will do more than read codes, it will check virtually ALL car systems. Foxwell scanners do that. I have one for my duramax and one for my acura. they will let you do things like lock/unlocks doors, run AC etc. etc.