OBDII Problems

[BryanGT]

I have a 98 K1500 and cannot for the life of me to get any scanner to read the OBDII port. Using an ELM327 bluetooth dongle with Dashcommand. I tested them both successfully on my Dodge. The cig lighter has power, the port is getting power, I can pair with it, but it cannot detect the vehicle.

Im about at the end of my rope after rebuilding the engine and everything else on this truck. I need to set the retard.

Does anyone have any ideas?

 

[df2x4]

Some cheaper OBD2 adapters don't play well with certain vehicles. Just because it works on your Dodge doesn't mean it will work on the Chevy. I have a cheap Amazon ELM327 adapter that seems to only work with GMT400s for some reason, but then I try it on other vehicles and get the same result you describe. On the other hand, I have a $90 PLX Kiwi that connects to every vehicle I try it on with no issues. Long and short of it, try a different ELM327 adapter.

EDIT - As a side note, I never found DashCommand to be all that useful. Torque is a much better app IMO, but I'm on Android.

 

[BryanGT]

I also have an SCT tuner that can pull codes, it cannot connect.

 

[bullas1022]

Df2x4 do you have a link to the adapter you have from amazon??

 

[df2x4]

Df2x4 do you have a link to the adapter you have from amazon??

The cheap ones I have a few of seem to have been removed, but they look just like these:

http://www.amazon.com/ELM327-OBD-II-Bluetooth-CAN-BUS-Diagnostic/dp/B008TL6RT0/ref=sr_1_13?ie=UTF8&qid=1439017772&sr=8-13&keywords=elm327

My nice PLX is this one:

http://www.amazon.com/PLX-Devices-Bluetooth-Smartphone-Wireless/dp/B00U0YNMS8/ref=sr_1_2?ie=UTF8&qid=1439017880&sr=8-2&keywords=plx+kiwi

The PLX has actually gone down in price quite a bit since I bought mine.

 

[21Actual]

Have you rulled out a com error by trying another scanner. Even one of the cheap code read only ones.

I too have heard the bluetooth adapers being hit and miss. Although my $8 eBay paired with Tourque pro one has worked on every vehicle Ive plugged it into so far

 

[BryanGT]

I do have another scanner, and it fails as well. Both work on the Dodge.

 

[BryanGT]

As an update, I've verified all ground straps, verified continuity from pcm to dlc, verified grounds on dlc. At this point I'm thinking it's the computer.

 

[df2x4]

That is an odd one. I've never heard of one of the black box PCMs failing in that way, but anything is possible I suppose.

 

[BryanGT]

I have now replaced the PCM....and still have the same issue.