What is OBD-II and does my car support it?

OBD-II (On-Board Diagnostics II) is a standardized system in all cars manufactured after 1996 in the US and 2001 in the EU. If your car was built after these dates, it almost certainly has an OBD-II port, typically located under the dashboard near the steering column.

How does GaugeAI diagnose car problems?

GaugeAI uses advanced AI models trained on millions of diagnostic records to analyze your OBD-II error codes, sensor data, and vehicle information. It cross-references manufacturer-specific databases to provide accurate, plain-English explanations and repair recommendations.

What OBD-II scanners are compatible with GaugeAI?

GaugeAI works with any ELM327-based Bluetooth or WiFi OBD-II scanner. Popular options include BAFX Products, Veepeak, and BlueDriver. You can also upload data manually through photos, CSV files, or raw diagnostic logs.

Is GaugeAI accurate enough to replace a mechanic?

GaugeAI achieves 99.2% accuracy in code interpretation and provides detailed repair guidance. While it is an excellent first-line diagnostic tool that can save unnecessary mechanic visits, we recommend professional inspection for complex repairs and safety-critical issues.

Which car brands and models does GaugeAI support?

GaugeAI supports over 10,000 vehicle models across all major manufacturers including Toyota, Honda, BMW, Mercedes-Benz, Ford, Chevrolet, Hyundai, Kia, Volkswagen, Nissan, Changan, and many more. Our AI is trained on manufacturer-specific diagnostic data for more precise results.

How much does GaugeAI cost?

GaugeAI offers a free plan with 5 diagnostic scans per month. Our Pro plan at $14/month includes unlimited scans, full diagnostic history, repair cost estimates, and priority AI analysis. Fleet plans start at $89/month for businesses managing multiple vehicles.

Is my vehicle data secure and private?

Absolutely. All diagnostic data is encrypted in transit and at rest using AES-256 encryption. We never share your vehicle data with third parties. You can delete your data at any time from your account settings. We are SOC 2 Type II compliant.

Can I use GaugeAI without an OBD-II scanner?

Yes. While direct OBD-II connection gives the most comprehensive results, you can also upload photos of your dashboard warning lights, paste error codes manually, upload CSV data exports from other tools, or share scanner screenshots for AI analysis.

GaugeAI hardware · GA-200

One port. Every signal. A clearer answer.

Our OBD-II interface is the bridge between raw vehicle electronics and GaugeAI. It discovers the active protocol, reads the right data and delivers a clean diagnostic stream without asking the driver to understand a single hexadecimal frame.

Explore the hardware Start a diagnosis

1996+: Vehicle coverage
9: OBD-II protocols
< 800 ms: Auto-detection
100 Hz: Live sampling

Plug & play01/05

Any OBD-II scanner works.

ELM327 Wi-Fi, Bluetooth, or wired — GaugeAI reads every adapter built since the 1996 mandate, with no setup beyond plugging it in.

HandshakeLIVE

TRANSPORTBT · WI-FI · USB

AUTO-DETECT< 800 ms

COVERAGE1996 → 2026

12–24 V16-PIN J1962BT 5.0 LE100 Hz

Interactive walkthroughSelect a stage

Inside the interface

Built to protect the car—and preserve the signal.

Vehicle networks are electrically noisy and protocol-heavy. Each layer of the GA-200 has one job: connect safely, identify correctly, process quickly and move complete evidence into GaugeAI.

0116 PIN · 12–24 V

Universal J1962 interface

The standard 16-pin connector reaches CAN, ISO, KWP and J1850 buses without model-specific cables or manual pin mapping.

02ESD · SURGE · REVERSE POLARITY

Protected signal path

Input conditioning, transient suppression and isolated bus transceivers protect both the adapter and the vehicle electronics.

0348 MHz · 100 Hz

Low-latency processing

A dedicated controller negotiates the vehicle protocol, schedules PID requests and prepares a stable stream for GaugeAI.

04BT 5.0 LE · 40 M

Reliable wireless link

Bluetooth Low Energy moves live frames to the app while preserving enough bandwidth for multi-sensor diagnostic sessions.

Protocol coverage

The connector stays the same. The language changes.

GaugeAI negotiates the bus automatically. No protocol menu, baud-rate guessing or pin selection is required.

ProtocolPinsTypical useSpeed

ISO 15765-4 CAN6 / 14Most 2008+ vehiclesUp to 1 Mb/s

ISO 9141-27 / 15European and Asian vehicles10.4 kb/s

ISO 14230-4 KWP7 / 15Keyword protocol vehicles10.4 kb/s

SAE J1850 PWM2 / 10Ford applications41.6 kb/s

SAE J1850 VPW2GM applications10.4 kb/s

From port to plain English

Hardware collects the evidence. GaugeAI makes it useful.

Connect

Plug into the vehicle’s OBD-II port and turn the ignition on.

Negotiate

The interface identifies the active bus and establishes a stable ECU session.

Stream

Codes, freeze frames and live PIDs move securely into the GaugeAI engine.

Understand

GaugeAI returns the likely cause, safety guidance, repair path and fair cost range.

One adapter. One app. One answer.

Stop reading codes. Start understanding your car.

Use the interface you already own or pair GaugeAI with our hardware. Either way, the diagnosis begins with better evidence.

Start free diagnosis View OBD-II hardware