Viecar 4.0 ELM327 V1.5 Bluetooth WiFi OBD2 Diagnostic Scanner

Viecar 4.0 ELM327 V1.5 OBD2 Bluetooth & WiFi Diagnostic Scanner – Read & Clear Engine Codes from Your Phone

Take full control of your vehicle's health with the Viecar 4.0 ELM327 V1.5 OBD2 Diagnostic Scanner. Powered by a genuine PIC18F25K80 chip and featuring Bluetooth 4.0 dual-mode plus WiFi connectivity, this compact plug-and-play adapter lets you read real-time engine data, diagnose fault codes, and monitor fuel efficiency — all from your iOS, Android, or Windows device. No expensive garage visits for basic diagnostics ever again.

Made in Mainland China.

Compatible with all OBD2/EOBD compliant vehicles — that's virtually every car sold in the USA from 1996 onwards and European petrol cars from 2001 / diesel cars from 2003–2004.

Why Choose the Viecar 4.0?

• Real PIC18F25K80 Chip (Hardware V1.5) — genuine high-performance chip for reliable, fast data reads (not a cheap clone).
• Bluetooth 4.0 Dual-Mode (2.0 & 4.0) — seamlessly connects to both iOS and Android devices with low power consumption.
• WiFi Support — flexible wireless connectivity for iOS, Android, and Windows laptops/tablets.
• Supports ALL OBD-II Protocols — SAE J1850 PWM/VPW, ISO 9141-2, ISO 14230-4 KWP, ISO 15765-4 CAN (11-bit & 29-bit, 250/500 Kbaud), SAE J1939 CAN, and more.
• Over 3,000 DTC Definitions — read and clear generic and manufacturer-specific diagnostic trouble codes instantly.
• Real-Time Dashboard Data — engine RPM, coolant temperature, vehicle speed, fuel trim, intake air temperature, throttle position, air flow rate, oxygen sensor voltages, timing advance, and much more.
• Fuel Economy Analysis — real-time and historical fuel consumption tracking to help you save money at the pump.
• Head-Up Display (HUD) Mode — project critical driving data so you never have to look away from the road.
• Driving Behavior Recorder — logs acceleration, idling, and driving patterns to help you build safer, smarter habits.
• Maintenance Reminders & Voice Alerts — stay on top of service schedules and get fatigue driving warnings.
• 1-Year Hardware Warranty — backed by the manufacturer with free software updates included.

Technical Specifications

• Model: Viecar 4.0 / AER ELM327 4.0
• Hardware Version: V1.5 with real PIC18F25K80 chip
• Communication: Bluetooth dual-mode (BT 2.0 / BT 4.0) + WiFi
• Compatible OS: iOS, Android, Windows
• Operating Voltage: 9V – 16V (12V typical)
• Operating Current: 45mA
• Operating Temperature: -40°C to 85°C
• Dimensions: 45mm × 40mm × 18mm
• Material: High-grade plastic & metal
• Certification: CE

Compatible OBD2 Apps

• iOS: Mini OBD, OBD Auto Doctor, GeekOBD
• Android: Torque Pro, DashCommand, EOBD Facile
• Windows: ScanMaster-ELM, ScanTool.net, PCMSCAN
• Symbian: OBDScope

⚠️ Important Bluetooth Connection Instructions

1. Enable Bluetooth on your phone — but do NOT pair the device via your phone's Bluetooth settings page.
2. Open your OBD2 app (e.g., OBD Auto Doctor).
3. Go to the app's Adapter / Connection Settings.
4. Connect to the Viecar 4.0 from within the app, then close and reopen the app. You're good to go!

What's in the Box

• 1× Viecar 4.0 / AER ELM327 OBD2 Adapter
• 1× User Guide

Learn More About OBD2 Diagnostics

For authoritative guidance on vehicle on-board diagnostic standards and emissions regulations, visit the U.S. Environmental Protection Agency – OBD Information Page.

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Frequently Asked Questions

Q: Is the Viecar 4.0 ELM327 compatible with my iPhone (iOS)?

A: Yes! The Viecar 4.0 uses Bluetooth 4.0 dual-mode, which supports both iOS and Android devices. For iPhone users, simply connect through your OBD2 app's internal adapter settings (such as OBD Auto Doctor or Mini OBD) — do not pair through the iPhone's main Bluetooth settings menu, as this will not work correctly.

Q: What vehicles are compatible with this OBD2 scanner?

A: The Viecar 4.0 ELM327 works with all OBD2-compliant vehicles, which includes virtually all cars and light trucks sold in the United States from 1996 onwards, and EOBD vehicles in Europe (petrol cars from 2001, diesel cars from 2003/2004). It supports all standard OBD-II protocols including CAN, ISO, SAE J1850 PWM/VPW, and KWP2000.

Q: Can I clear the "Check Engine" light with this scanner?

A: Absolutely. The Viecar 4.0 ELM327 can read and clear both generic and manufacturer-specific Diagnostic Trouble Codes (DTCs), including turning off the MIL (Malfunction Indicator Lamp / Check Engine light), once the underlying issue has been addressed.

Q: What is the difference between the Bluetooth and WiFi versions?

A: Both the BT and WiFi versions use a genuine PIC18F25K80 chip and support iOS, Android, and Windows. The Bluetooth 4.0 version is ideal for quick pairing with mobile devices, while the WiFi version can be useful in environments where Bluetooth connectivity may be limited or when connecting to multiple devices simultaneously.

Q: Does this OBD2 scanner require any subscription or software purchase?

A: No additional software cost is required. The purchase includes the right to use the Viecar proprietary software with free ongoing upgrades, and a 1-year hardware warranty is included.