Plug in the adapter
Connect to the vehicle’s OBD-II port and turn the ignition on.
SCANNER START GUIDE
Read codes and live data from your browser.
Connect a compatible OBD-II adapter to read fault codes, check live measurements, and export your scan. No subscription needed.
Free scanning No subscription Bring your adapter
How it connects Illustration
Read the scan in your browser.
01 · CHECK YOUR SETUP
Find your connection path.
Choose your device and adapter connection. This guide covers Chrome and Edge on a computer, and Chrome, Edge or Samsung Internet on Android. It does not pair with your adapter or test your vehicle.
02 · FIRST SCAN
From adapter to evidence in three moves.
Illustrations show the steps, not the scanner interface.
Pair in your browser
Open the scanner and choose your compatible adapter.
Pairing instructions
Open Scan vehicle. Choose Connect Bluetooth (BLE), or Connect USB / Bluetooth Classic when your browser offers it, then pick your adapter from the browser’s list. No adapter? Import existing scan brings in a report from Autel, Topdon, VCDS, ISTA, ODIS or SDD.
Read and save
Review the readings and save a Customer PDF or the Raw JSON before clearing codes.
Park safely before connecting. Run the engine only when a measurement requires it, with adequate ventilation. Clearing codes does not repair the cause and can reset emissions readiness monitors.
03 · WHAT YOU GET
A scan gives you facts to work from.
Lane Pilot reads what the vehicle and adapter make available, keeps the conditions beside the code, and lets you carry that evidence into diagnosis.
Trouble codesStored, pending and permanent codes with vehicle identification.
Live measurementsSupported engine, fuel, emissions, and sensor readings.
Freeze frame & readinessFault conditions when a code is stored, and emissions-monitor completion states.
Portable recordSave a Customer PDF (optional RO number; diagnostic, pre-scan or post-scan) or the Raw JSON, or carry the evidence into a diagnostic session.
04 · IF IT DOESN’T CONNECT
Start with what you can see.
Choose the symptom that matches the bay. The first checks stay short; protocol detail stays out of your way until you need it.
My adapter is not listed
Confirm the adapter is powered and no other app is holding it. For Bluetooth Classic, pair it in the operating system first. For BLE, do not use the operating-system pairing screen—choose Connect Bluetooth (BLE) inside Lane Pilot and pick the adapter from the browser’s list.
Why does the vehicle fail to connect?
Check ignition state, adapter power, and the OBD connector first. A failed connection does not identify its cause. Some SAE J1979-2 (OBDonUDS) vehicles use ordinary 500 kbps CAN, while other newer vehicles use CAN FD, which Lane Pilot does not support yet. Silence does not tell those cases apart.
The VIN or a reading is missing
Support depends on the vehicle, adapter, protocol, and the data that ECU returns. Enter the VIN manually when needed. A missing response alone does not prove the adapter is a clone or the vehicle has a fault.
The scan is slow or disconnected
If the adapter stops answering, Lane Pilot stops sending, keeps what it already captured and marks the scan partial. Keep the adapter powered, close competing scanner apps, use Reconnect, and review the partial results before scanning again.
REFERENCE · WHEN YOU NEED IT
Coverage and technical detail.
The guide keeps the first scan simple. The exact boundaries and decoder coverage are still here when a job needs them.
Vehicle and protocol coverageStandard OBD-II, extended access, CAN FD, gateways
Standard evidence: VIN, supported live PIDs, stored, pending and permanent codes, freeze frame when a code is stored, readiness monitors, and calibration IDs and CVNs. Mode 06 monitor results are an optional extra read (Advanced Readings).
Extended access varies: manufacturer-specific data and protected modules depend on verified coverage and the vehicle. CAN FD vehicles are not supported yet. AutoAuth is not available yet.
Ethernet (DoIP): a computer-only advanced path for vehicles with an Ethernet diagnostic connection. It needs a supported ENET cable and the Lane Pilot DoIP Daemon running on the same computer, and it is not a Wi-Fi adapter path.
Scanning and diagnosis are separate: scanning stays free. Diagnostic sessions turn evidence and symptoms into a test plan; session allowances depend on your plan.
Data reference68 standard SAE J1979 PID definitions across 7 categories
Fuel12
MAF Air Flow · Fuel Rail Gauge Pressure · Commanded Equiv Ratio · Fuel Type · Short Term Fuel Trim (B1) · Long Term Fuel Trim (B1) · Short Term Fuel Trim (B2) · Long Term Fuel Trim (B2) · Fuel Pressure · Intake Manifold Pressure · Fuel Tank Level · Engine Fuel Rate
Engine17
Throttle Position · Relative Throttle Position · Abs Throttle Position B · Abs Throttle Position C · Accelerator Pedal Pos D · Driver's Demand Torque · Actual Engine Torque · Engine Reference Torque · Calculated Engine Load · Engine Coolant Temp · Engine RPM · Vehicle Speed · Timing Advance · Engine Run Time · Accelerator Pedal Pos E · Commanded Throttle Actuator · Engine Oil Temp
Emissions9
O2 Sensor 1 (B1) · O2 Sensor 2 (B1) · EVAP System Vapor Pressure · Commanded EGR · Commanded EVAP Purge · Catalyst Temp (B1S1) · Catalyst Temp (B2S1) · Catalyst Temp (B1S2) · Catalyst Temp (B2S2)
System7
Distance w/ MIL On · Warmup Cycles Since Clear · Distance Since Codes Cleared · OBD Standards Compliance · Time w/ MIL On · Time Since Codes Cleared · ECU Odometer (Verified)
Sensors5
Barometric Pressure · Absolute Load Value · Ambient Air Temp · Dual Coolant Temp · Intake Air Temp
Electrical1
Control Module Voltage
Diesel17
Boost Pressure A (actual) · VGT A Vane Position (actual) · Exhaust Pressure (B1) · Turbocharger A Speed · Charge Air Cooler Temp (S1) · Exhaust Gas Temp (B1 S1) · Exhaust Gas Temp (B2 S1) · Intake Manifold Abs. Pressure A · EGR Error · Relative Accel Pedal Position · EGR Temperature · Commanded Diesel Intake Air · Turbo A Compressor Inlet Pressure · DPF Differential Pressure (B1) · DPF Differential Pressure (B2) · DPF Inlet Temperature (B1) · Engine Run Time (total)
Clearing codes and calibration recordsWhat clearing changes; what CalID and CVN do not prove
Save first: Mode 04 clears diagnostic information and resets emissions readiness monitors where supported. Clearing a code does not repair its cause, and permanent codes are not erased by a normal clear command.
Lane Pilot reports the CalID and CVN returned by the ECU. A CVN here is compared against nothing: there is no OEM reference database, so Lane Pilot never calls a calibration intact, tampered or tuned.
When an earlier scan of the same VIN was saved to a diagnosis, Lane Pilot flags a CalID set that DIFFERS from it. This does not say what was done to the vehicle. Check missing data against the requirements of your local inspection program.
SETUP CHECKED?
Connect the car. Keep the evidence.
Scanning is free and never metered. Bring a compatible adapter and start with the vehicle in front of you.
Check compatibility first