OBD2 Car Scanner & Diagnostics

Turn your phone into a car diagnostic tool. OBD2 Car Scanner connects to an ELM327 Bluetooth or Wi-Fi adapter so you can read fault codes, see why the check engine light is on, and watch live engine data in real time.

No account needed. Plug in your adapter, connect, and scan your car in seconds. No adapter yet? Try the demo car first.

READ AND CLEAR FAULT CODES
• Run a full scan to read stored, pending and permanent trouble codes (DTC)
• Get plain-English descriptions, severity and likely causes
• See if it is OK to keep driving, with questions to ask your mechanic
• See which car system has a fault on an easy car diagram
• Check emissions readiness monitors and freeze frame data
• Clear codes and turn off the check engine light after a repair

LIVE DATA AND CUSTOM DASHBOARD
• Watch RPM, speed, coolant temperature, engine load, throttle, voltage and more
• See live sensor graphs with minimum, maximum and average values
• Build your own OBD2 dashboard with 6 gauges and swipeable pages
• Get warnings for overheating, high RPM and low charging voltage

ABS, AIRBAG AND MODULE SCAN
• Scans modules such as ABS, airbag, transmission, body and instrument cluster
• Reads and clears module fault codes, including history codes
• Shows live module data such as wheel speeds, gear and battery voltage
Available on selected cars. Modules vary by make, model and year.

BATTERY AND WHEEL CHECKS
• Check battery and charging health with a guided test
• Compare wheel speeds to spot a bad sensor or odd tyre

USED CAR CHECK
Buying a used car? Scan it first. See warning signs such as recently cleared codes and unfinished readiness monitors, then share a PDF report.

TRIPS, GARAGE AND COSTS
• Record trips with distance, speed and fuel economy
• Keep several vehicles in your garage
• Get maintenance reminders for oil, filters and more
• Track fuel, service and repair expenses

GO FURTHER WITH PRO
One payment, no subscription:
• Unlimited Used Car Check reports and mechanic reports
• Unlimited gauges, extra dashboard pages and drag to rearrange
• 10 premium dashboard styles, more car bodies and paint colours
• 0-60 and ¼ mile performance tests
• Mirrored windshield HUD mode
• Mode 06 monitor test results
• Battery check history
• No ads

WHAT YOU NEED
• An ELM327 compatible OBD2 adapter (Bluetooth, Bluetooth LE or Wi-Fi)
• A car with an OBD2 port. Most petrol cars from 1996 in the US and 2001 in Europe have one, and most diesels from 2004 in Europe
Available data depends on your car and adapter, so not every car supports every sensor or module.

SAFETY
Do not operate this app while driving. Use a phone mount and set up your screens before you start your trip. Clearing fault codes does not repair the underlying fault. This app reads data for information only and does not replace a qualified mechanic.