CanDo International

Frequently Asked Questions

Where to buy?

Here is our current list of distributors:

Cornwell Tools
AE Tools
Napa Auto Parts
Diesel Laptops
M. Eagles Tool Warehouse
G2S Equipment

I am having software or hardware issues. Who do I contact?

You can email: or call our support line at 1-909-CanDo-11

CanDo HD PRO ll Screen Calibration

To perform a screen calibration press the power button on the HD PRO ll, you will see a green progress bar. Hold down on the green progress bar until you enter Calibration Mode. If the unit boots to the home screen, please repeat power off and on again.

When you are in calibration mode, using your finger or stylus, press and release on + sign on each corner to calibrate. Once done, it will bring you back to home screen.

Does the HD Mobile work on both Android and iOS devices?

Yes, the HD Mobile is compatible with both operating systems.

Does the HD Mobile have software updates?

The HD Mobile software is always being improved and features being added. With updates being released as functions improve, check your phones App Store for the newest releases. It is always recommended to keep your software up to date.

How long is the warranty?

All products come with a 1 year manufacturer’s warranty. The date of warranty begins on the date of purchase or registration of the unit.

Where do I find the 'Login Name' for my Update Tool login?

The “Login Name” will be your tools serial number. Your “Serial Number” and “Password” can be found in your tools main menu under the “About” section.

My 9 Pin connector will not plug into my trucks diagnostic connector.

We have experienced interference issues with our “Y” adapter cables 9 Pin connector and certain manufacturers diagnostic connector. Please refer to the technical service bulletin (TSB# 1014-01) listed below.

TSB# 1014-01

Why does not HD Code+ show the definition with the codes on screen?

All of those codes are none OBD codes and undefined in a OBD/CANBUS compliant code reader.

Is there any new updates or features for my product?

You may find the update software under the specific product on our product page. Once the unit is updated, it will give you recent version that is available.

Is the OBD Aid a breakout box?

The OBD-Aid is much more than a breakout box. It will run a diagnostic check on pin voltages and is a pass through device which can be used in line with a scan tool during programming. It will also monitor protocol and communication through the LED indicators.

Can the GPR-100 be used on any voltage glow plug?

Yes, one of the GPR-100’s features is its ability to test glow plugs ranging up to 24 volts.

Can the BAT Plus be used on spiral cell batteries?

The BAT Plus has the ability to test “Wet Type” and “AGM” type batteries like the spiral cell batteries.

Can the BAT Plus run a loaded charging system test?

Yes, the BAT Plus will run 2 tests durings its Charging System test. A No Load test at 3000RPM and a Loaded System Test at 2000 RPM.