HELP! OBDCOM Troubleshooting guide
Problems are pretty rare, but as we all
know, sometimes the computer just does not cooperate.
printing this guide. Printer-friendly: PDF document
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guide comes from experience helping customers get their OBDCOM system
working, so these suggestions really work. If you're having
trouble, this should help in almost all cases. Also, please note that we
test all of the tools thoroughly before shipping them and that there are
many thousands of OBDCOM users all across the country, with all makes and
models of cars. It is best to read this guide from beginning to end, and
not skip anything unless it says you should skip. Above all else, the first
suggestion is to be patient and know that we will solve the problem.
What to do
if OBDCOM says "Error 0" when you try to connect to the car:
First try re-installing
the drivers from the CD. This
solves almost 100% of all drivers installation problems. Just follow the QuickStart guide included
with the package to install the drivers.
It still says "Error 0"?
We've encountered many
cars with a blown fuse for the diagnostic socket. This is a VERY common
problem. Plug the tool ONLY into the CAR, but NOT into the
computer. Do you see a red
light shining through the sticker?
No light means you have a blown fuse in the car. Check ALL fuses. Sometimes it is hard to see a blown
fuse. In many vehicles, it is the same fuse as the cigarette lighter or
accessory outlet. Note: saying
"I remember the red light" is not a valid test. You must RE-DO the above test plugging
the tool into the vehicle only, and not into the computer. Once you locate and change the suspect
fuse, plug in the tool again ONLY into the car, and look for the red
light. If the tool isn't handy, you
can also test the vehicle's socket for power, using a voltmeter set to DC
range. This photo shows which pins
to check: http://www.obdcom.com/TEST.JPG
You should measure battery voltage there, approximately 12 volts, or
higher while the engine is running. A blown fuse in
the car is the #1 cause of Error 0.
It's even more common with pickup trucks. Another way to rule out a
problem with the vehicle, is to try
a different vehicle.
Still getting "Error 0", after trying the above?
With the OBD plugged
into the computer's USB port, open up Windows Device Manager and find
Ports(COM&LPT) in the list. Open that group and look for something
USB Serial Port (COM#) in the list.
(If you do NOT see it, then the drivers need to be
re-installed. If you already
re-installed the drivers, also make sure the tool is plugged into a working
USB port) NEXT: What is the COM# next to USB
Serial Port? If the COM# is
higher than 15, then first we need to take note of what other COM#s are
present on your computer. You can see them in this list – there may only be
one, or there may be several. Next, double click USB Serial Port (COM#),
then click the Port Settings tab, then click the Advanced
button, and use the drop-down list to change the port number to something
in the 1 to 15 range. Don't pick something that was already taken by
another COM# on the list. Windows may say "in use" but that is ok
– just go by what you saw on the list. Lower numbers are probably a better
choice. Often COM2 or COM4 is available, and that's a good choice, but
anything in the 1 to 15 range should be just fine. Once you change it,
click OK, and give it a try on the car.
"Error 0" after trying all that?
Try running OBDCOM as
administrator. Here's how: Find the OBDCOM icon on your start menu, and RIGHT-CLICK
it. In the popup menu that appears, click Run As Administrator.
Windows will ask permission, so be sure to Allow it. Give it another try on
the car. This has worked in many cases.
"Error 0" fix:
Move your mouse over all
the little icons in the "tray". The tray is the area next
to the clock, at the bottom right of your screen. Each of those
little icons represents a running program. As you move your mouse
over them, look at the popup messages. If one of them says "hot
sync" or "palm sync", right click that little
icon and exit the program. Hot sync and Palm sync software
interferes with the ports and will result in "Error 0".
You got a "BLUE SCREEN" and Windows
shut down when you clicked CONNECT in OBDCOM?
With the OBD plugged
into the USB port, open Windows Device Manager and scroll down to Ports(COM&LPT),
then open that section up and look for something called USB Serial Port (COM#).
What is the COM#? What else is
listed there? You probably have
other things, each with their own COM number. Option 1: If you set the
COM# for USB Serial Port to something in the 1-to-8 range, you can then
force the OBDCOM software to use that port in Setup, and put a check in the
"Disable automatic port search" box. Option
2: You can disable the other COM
ports by Right-clicking on all the other devices with a COM#, and choose
"Disable". (This is not permanent.) Don't disable
USB Serial Port (COM#), just disable all the others. Option 1 is the best solution. Once you've done one of these two
options, try it on the car. The 'Blue Screen' should be gone. If you need help with the 'Blue Screen'
problem, please let us know.
You got an Error number in the 100's:
The battery on the car is weak. Try starting the car
first to let the battery charge up a bit.
You got an Error number in the 200's:
See the suggestions for "Runtime Error
You got an Error number in the 300's:
Please email us for assistance with this one and
mention the error number.
You got Error 1, or the connection status on the
computer screen is changing yellow and red and just keeps going on forever?
Make sure the ignition
key is in the run position, with all the dash lights on, or you can also try with the engine running.
got Runtime Error 75 or 53 or you get no descriptions for trouble
This is a file permission
or security issue with windows that can happen on some computers.
You can solve this problem by reinstalling OBDCOM, as follows:
Use the OBDCOM CD and run SETUP.
You will be asked where you want to install it. The normal place is C:\ProgramFiles\OBDCOM,
or something similar to that.
Get rid of the "Program Files" and anything else, when you are
and leave only C:\OBDCOM\ in the box. The purpose of all this is to install
OBDCOM to its own private folder, outside of "Program Files", so
that windows will not interfere with its files.
got "Runtime Error 8021" ?
Cause #1: Please make sure the connection to the
computer USB port is good. Try unplugging it and plugging it in again
a few times. Then unplug, wait 10 seconds, and plug it back
in. Give it another try on the car.
Cause #2: Are you using an inverter to power the laptop?
Some inverters make electrical noise and interfere with the
diagnostics. That would cause error 8021, and other errors.
Cause #3: Are you using a USB extension
cable? How long? USB cables are not approved for longer than
about 16 feet. Try again without using the extension.
When you plugged in the OBDCOM
the first time, there was no "found new hardware"?
Give it a try on the
car. In some cases, the tool can be recognized without any messages
on the screen. If it does not work, go to the top of this page.
tried all of this and it is still not working?
First, THANK YOU for
your patience and cooperation. To
help us help you, please email us
(1) the error number you got, (2) the year/make/model vehicles you tried,
(3) the windows version, (4) The OBDCOM version number at the top of the
OBDCOM window, (5) your full name and phone number, and (6) a
description of what is happening. This will help us solve the problem
faster and help you to get the system working as quickly as possible.
Please don't leave any details out. The more information you can give, the
better. If possible, please try another vehicle, and if you have another
computer, you could try another computer too. Remember, we are
here to help.