OBD IQ Support Center

Guided fix

Answer a few questions. We’ll find the cause.

Pick what you’re seeing. Each answer rules something out, and if nothing works you’ll get a summary to read to support.

Field tools

Check it yourself before you call.

Catch VIN typos before entering them in the app, and see exactly where to stand while a scan runs.

VIN checker

Use it before you type a VIN into the Identify Vehicle screen.

Example

Vehicle Identification Number 0 / 17

Maker (1–3)Vehicle details (4–8)Check digit (9) Model year (10)Plant (11)Serial (12–17)

Make: —
Built in: —
Model year: —
Check digit: —

Try:

Where to find it: the bottom corner of the windshield on the driver’s side, or the sticker on the driver’s door jamb. VINs never contain the letters I, O, or Q.

Bluetooth range check

Drag the sliders to see where to stand during a scan.

Good to scan

You to the adapter 4 ft

Gap to the next vehicle being scanned 18 ft

All issues

Every known issue, with the fix.

Filter by area, or use the search at the top of the page.

Good habits

Stay within about 5 ft of the adapter while the scan runs.
Expect longer scans on vehicles with more control modules.
Tap COMPLETE, then unplug the adapter before you leave the vehicle.

Avoid

Tapping “Don’t Allow” on app permissions at first launch.
Leaving the inspection area while a scan is running.
Clearing codes casually. It can erase stored settings or custom programming.

Talk to a person.

Have the VIN handy and tell us what you’ve already tried. The summary below fills in as you use the guided fix.

Call support

(800) 932-1120

Call

support@cardr.com

Include the VIN, your phone model, and a screenshot of any error.

Your troubleshooting summary

OBD IQ Support Center · Updated October 2026 More answers: cardr.com/faqs

Let’s get your scan running.