LambdaOBD - OBD2 Car Scanner

Athanasios Manou

In-app purchases

About this app

Check engine light on? Understand what your car is telling you.

LambdaOBD turns your Bluetooth ELM327 adapter into a powerful yet easy-to-understand OBD2 scanner. Read engine fault codes, monitor live data, check vehicle health and understand what might be wrong, without getting lost in technical jargon.

**FREE FEATURES**

• **Quick Bluetooth Setup** – Connect your ELM327 adapter in seconds with guided setup. Supports Bluetooth Classic and Bluetooth LE. Your adapter is remembered for future connections.

• **OBD2 Fault Code Scanner** – Read stored, pending and permanent DTCs, view freeze frame data and check readiness monitors.

• **Understand Your Fault Codes** – Get likely causes and symptoms for 850 common fault codes, plus descriptions for more than 9,000 generic codes, powered by the open OBDex database.

• **Used Car Health Check** – Get a quick overview of a vehicle's electronic health in around 30 seconds. Check fault codes, readiness monitors, when codes were last cleared and engine behaviour at idle. Get one clear verdict, especially useful when buying or selling a used car.

• **Safe Code Clearing** – Understand what clearing fault codes will reset before confirming the action.

• **Live OBD2 Data** – Monitor engine RPM, coolant temperature, boost pressure, fuel trims, oxygen sensors and much more. Choose the parameters you want and watch them together on a live chart. Supports metric and imperial units.

• **Drive Mode** – A large, easy-to-read speedometer with essential live values, or clean vehicle health tiles that help you spot issues such as overheating or a weak battery. Switch views with a simple swipe.

• **Vehicle Garage** – Keep every connected vehicle, its scans and recorded drives in one place. For supported North American vehicles, automatically retrieve make, model, year, engine, body, drivetrain and trim using the VIN and the US NHTSA database. Available offline.

**LAMBDAOBD PRO**

One-time purchase. No subscription. No recurring fees.

• **PDF Health Reports** – Generate a complete vehicle health report on a single page. Share it with a buyer, seller or mechanic.

• **Guided Diagnosis** – Get step-by-step suggestions on what to check next, based on your fault codes or the symptoms you notice.

• **Live Map in Drive Mode** – See your position, your route drawn in real time with speed-based colours, and four live vehicle parameters displayed on the map.

• **Drive Recording & Export** – Record your drives, replay recorded data and export everything as CSV. Export recorded routes as GPX or KML.

• **Custom Dashboard Pages** – Add up to four extra Drive pages with your preferred vehicle parameters, displayed as gauges or large numerical values.

• **All Future Pro Features** – Your Pro purchase includes future Pro features as they are added.

**PRIVATE BY DESIGN**

No account. No ads. No tracking. No unnecessary internet access.

Your vehicles, scans, recorded drives and routes stay on your device. LambdaOBD only connects to the internet to download map tiles while a map is displayed.

**WHAT YOU NEED**

• An OBD2 (OBD-II) compatible vehicle:
- US: Most cars from 1996 onwards.
- EU: Petrol cars from 2001 and diesel cars from 2004 onwards.

• A Bluetooth ELM327 OBD2 adapter (Bluetooth Classic or Bluetooth LE). Wi-Fi adapters are not currently supported.

• Android 7.0 or newer.

**IMPORTANT NOTES**

Vehicle manufacturers expose different OBD2 parameters, so available live data depends on your car.

The Health Check evaluates information reported by the engine electronics. It is not a complete mechanical inspection or a substitute for a qualified mechanic.

LambdaOBD helps you understand your vehicle, make informed decisions and stay in control of its diagnostics.

What’s new

First release of LambdaOBD.
• Read and clear fault codes, with likely causes in plain words
• Health check: battery, cooling and fuel trims
• Live sensors and gauges, with a calm Drive view for the road
• Record a drive and export it as CSV
• A garage for your cars
Works offline, no account, collects no data. Needs a Bluetooth ELM327 OBD-II adapter.
Optional Pro: one purchase, no subscription.