SCANMYCAR
Obie, the ScanMyCar AI mechanic, waving hello

Obie by ScanMyCar

An OBD2 scanner and app for iPhone. Plug in, and Obie tells you what's wrong, in plain words.

Trouble codes and live sensors are free. Obie is Pro.

The ScanMyCar OBD-II Scanner standing beside its box, and an iPhone with the ScanMyCar app connected to a 2026 Honda Accord The ScanMyCar OBD-II Scanner standing beside its box, and an iPhone with the ScanMyCar app connected to a 2026 Honda Accord

  1. 01

    Plug in

    Plug your ScanMyCar OBD scanner into the port under the dash.

  2. 02

    Connect

    Connect your car to the app over Bluetooth.

  3. 03

    Ask

    Ask Obie anything about your car.

6/6 systems checked

  • Engine829rpmIdle steady
  • Fuel+3%Trims normal
  • Ignition0misfiresSpark timing normal
  • EmissionsP0420Converter wearing out
  • Battery14.2VCharging normally
  • Cooling181°FNormal once warm

EmissionsP0420 · WATCH

The rear oxygen sensor swings almost as much as the front one.

Front
Rear

A healthy converter keeps the rear sensor steady. Fuel trims are normal and there are no misfires, so it points to a worn catalytic converter.

Obie · verdict

Safe to drive - worth fixing soon

Your catalytic converter is no longer cleaning the exhaust as well as it should (P0420). It won't strand you or hurt the engine.

What to do first

  1. 1Have a shop check the catalytic converter soon.
  2. 2Check that the gas cap is tight and its seal is not cracked.

Live data

Speed, RPM, coolant, battery and 139 sensors in all, read from your car's own computer.

ScanMyCar live data on an iPhone: 829 RPM at idle, 0 mph, coolant 181 °F and battery 12.6 V, with engine load and throttle belowScanMyCar live data on an iPhone: 829 RPM at idle, 0 mph, coolant 181 °F and battery 12.6 V, with engine load and throttle below

Drives

Connect, then keep ScanMyCar open while you drive. It records the trip: distance, time, speed and fuel cost. Your phone can stay locked.

1Connect
The ScanMyCar home screen, connected to a 2026 Honda Accord The ScanMyCar home screen, connected to a 2026 Honda Accord
2Record
A trip recording in ScanMyCar: 23.7 miles in 45 minutes, 32 mph average, 0.82 gallons of fuel at 29.0 MPG, $2.63 fuel costA trip recording in ScanMyCar: 23.7 miles in 45 minutes, 32 mph average, 0.82 gallons of fuel at 29.0 MPG, $2.63 fuel cost
The ScanMyCar OBD-II Scanner standing beside its box The ScanMyCar OBD-II Scanner standing beside its box

Preorder

Pro-grade scanner, for less than most Bluetooth OBD-II scanners.

Built better

  • Bluetooth Low Energy, built for iPhone. Many cheap adapters use Bluetooth Classic, which an iPhone cannot connect to.
  • FCC certified, tested to the US radio rules
  • Powered by the car: no battery, no charging, no cables
  • Fits gas cars and light trucks sold in the US since 1996

$34.99Regular price $49Save $14

Free shipping in the US.

Charged today. Full refund any time before it ships.

The app also works with any Bluetooth OBD-II scanner.

OBD-II Scanner $34.99 regular price $49 Preorder