Hazard: VIN & OBD2 Scanner

Hazard: VIN & OBD2 Scanner turns your phone into a real car diagnostic scanner.
Plug in an inexpensive ELM327 OBD2 adapter and instantly see what your vehicle
is actually doing — live engine data, stored fault codes, and the power to turn
off the check-engine light. Bluetooth AND Wi-Fi adapters supported. No
subscription, no sign-up, no clutter.

📡 LIVE OBD2 SCANNER — BLUETOOTH & WI-FI
Unlike most apps, Hazard works with EVERY type of ELM327 OBD2 adapter:
• Bluetooth LE (BLE)
• Bluetooth Classic
• Wi-Fi
Just pick your connection, tap connect, and read live data straight from your
car's ECU on clean, real-time gauges:
• Engine RPM and vehicle speed
• Coolant and intake air temperature
• Engine load, throttle position and MAF air flow
• Intake manifold pressure, module / battery voltage
• Fuel level and short / long-term fuel trims

⚠️ READ & CLEAR FAULT CODES — AUTOMATICALLY
Check-engine light on? Hazard reads the codes the moment you connect — no
button-hunting:
• Auto-scans and pulls stored diagnostic trouble codes (DTCs) from the vehicle
• Every code explained in plain English, instantly
• Covers P (powertrain), B (body), C (chassis) and U (network) codes
• Clear codes and reset the check-engine / MIL light once you've fixed the fault
Stop guessing what P0300 or P0420 means — and stop paying a shop just to read a
code.

🚗 VIN DECODER
Type, paste, or pull the VIN straight from the car over OBD, and decode the full
vehicle profile in seconds:
• Make, model, year and trim
• Body style, engine size, cylinders and fuel type
• Drive type, transmission, assembly country and manufacturer
Perfect before buying a used car, ordering the right parts, or verifying a
listing.

🔎 DTC FAULT-CODE DICTIONARY
A full diagnostic trouble code lookup — even with no car connected:
• Search any OBD-II / OBD2 fault code and read what it really means
• Generic SAE codes AND manufacturer-specific codes
• Filter by make: Toyota, Honda, Ford, BMW, Chevrolet, Nissan, Hyundai, Kia,
Volkswagen, Mercedes-Benz, Mazda, Subaru and more
• Search by description when you don't know the exact code

📊 OBD2 PID & SIGNAL REFERENCE
Learn what every sensor and parameter reports:
• Browse OBD2 PIDs and signals with quick-tap categories
• Standards covered: SAE J1979 (OBD-II), J1979-2 and WWH-OBD

💾 SAVE, EXPORT & SYNC
Save any scan — a live snapshot, a single sensor reading, or fault codes — tagged with a plate number for easy reference
Preview any saved scan as a clean PDF and share it via WhatsApp, email or any app
Connect a Hazard Garage workshop account and scans sync there automatically the moment you save them

WHY HAZARD?
✔ Real scanning — live data + automatic code reading from your car
✔ Works with ALL adapters — Bluetooth LE, Bluetooth Classic AND Wi-Fi ELM327
✔ Free — no subscription to read or clear a fault code
✔ Fast & clean — modern, easy interface, results in seconds
✔ Available in 30+ languages
✔ Four tools in one — Scanner, VIN decoder, DTC dictionary, PID reference

WHO IT'S FOR
• Car owners diagnosing a check-engine light
• DIY and home mechanics fixing their own cars
• Used-car buyers checking a VIN before purchase
• Auto technicians wanting a fast pocket scan tool
• Anyone who wants to know what their car is really doing

WHAT YOU NEED
A standard ELM327-compatible OBD2 adapter (sold separately) plugged into your
vehicle's OBD2 port — Bluetooth or Wi-Fi, both supported. The port is found on
virtually all cars built since 1996 (US), 2001 (EU petrol) and 2004 (EU diesel).
VIN decoding coverage is most complete for vehicles sold in the US market.

Download Hazard: VIN & OBD2 Scanner — read codes, kill the check-engine light,
and turn confusing fault codes into clear answers.

— Part of the Hazard suite of automotive tools. —

Recent changes:
Error code and DTC with detail explanation