HD V3.0 Heavy Duty Diesel Truck Diagnostic Scanner Tool Code Reader

I recommend this code scanner. I purchased this model because of features --- especially its ability to scan diesel trucks and cars --- and price. It worked very well when I received it, testing it on my 2015 Hyundai. A few months later, I had a "check engine" indication on my 2019 RV, built on a Freighliner/Cummins chassis. I hooked up the HD 3.0 using the J1939 adapter, but had difficulty making an electronic connection. Using the Amazon link to contact the seller/manufacturer for support, I opted to write an e-mail so I could provide details. I was pleasantly surprised to hear back the next morning with a couple of specifics questions, including requesting details about the vehicle. I responded within a few hours, including more details about the step-by-step process I performed connecting and selecting a test. And, importantly, information noted on my on-board readout and indicator lights. The next morning I received a zip file with a software update that fixed my issue. Bottom line, using e-mail we were able to exchange information that helped tech support quickly provide the software solution. I was very impressed.

Live data shows engine hours miles fuel used and some useful information

Work in various autos

This product couldn't even read a single code on my Freightliner Truck the very day I needed it. Had to call emergency roadside to help out. For the price, this is JUNK. I am definitely sending it back

Wasted my money on this one. Might work for other brands but I don't own any of them. Should have been clear, NOT FOR PACCAR.

Excelente todo

I have a Fleetwood coach and on my last trip I had engine trouble. It was horrible not knowing what was going on. It was on a weekend and I was unable to get help. Unsure if I was hurting the engine by continuing to drive it l felt helpless. I ordered this, received it the next day, and found the trouble. With that knowledge I knew I was ok for a while. Able to tell a Frightliner dealer the codes over the phone they told me what to do to get to them. I now keep it on the coach just for piece of mind. The not knowing is the worst thing to me. It worked great giving me the same code their test gear at the shop did. Well worth the money.

This OBD reader is awesome…. (So far) plugged it into my motor home and bingo gave me a low fuel pressure reading for my 330 hp Cummins engine……. It runs fine when I first started it and died 5 minutes later…. I think it’s the electric lift pump….. the plot thickens…..