V309 – Universal OBD2 Fault Code Reader & Code Reader for "Check Engine"
The V309 OBDII Code Reader is a compact and affordable OBD2 fault code reader for most cars from 1996 onwards. It reads and clears engine fault codes, turns off the MIL/Check Engine light, displays live data and freeze frame – with over 3000+ common code definitions directly on the 2.2" color screen.
Basic Data
-
Product Name: V309 OBDII Code Reader
-
Model: V309
-
Main Function: Read/clear OBD2 engine fault codes, turn off MIL, live data & freeze frame
-
Languages in device: English, German, French, Dutch, Spanish
-
Display: 2.2" color display
-
Price/SKU/EAN: Fill in
Quick Highlights
-
"Check Engine": Read & clear generic and manufacturer-specific DTCs; turn off MIL after repair.
-
Live data & graphs: Real-time PIDs, graph display, and logging.
-
Freeze frame: See engine status when the fault occurred.
-
Code database: 3000+ common code definitions displayed without internet.
-
Plug-and-play: Powered via OBD2 (9–16 V) – no app or PC required.
-
Multi-language: EN/DE/FR/NL/ES.
Compatibility & Limitations
Intended for OBD2/EOBD vehicles (12 V). Guidelines: USA approx. 1996→, EU petrol ~2001→, EU diesel ~2004→, Asia ~2006→. Support may vary by model year/market.
Supported OBD2 Protocols
- SAE J1850 PWM (41.6 kbaud)
- SAE J1850 VPW (10.4 kbaud)
- ISO 9141-2 (5-baud init, 10.4 kbaud)
- ISO 14230-4 KWP (5-baud init, 10.4 kbaud)
- ISO 14230-4 KWP (fast init, 10.4 kbaud)
- ISO 15765-4 CAN (11-bit, 500 kbaud)
- ISO 15765-4 CAN (29-bit, 500 kbaud)
- ISO 15765-4 CAN (11-bit, 250 kbaud)
- ISO 15765-4 CAN (29-bit, 250 kbaud)
Note: The V309 is an engine diagnostic reader (powertrain). It does not read ABS/airbag/EPB or other systems.
Full Specification
| Model |
V309 |
| Operating Voltage |
DC 9–16 V (powered via OBD2) |
| Power Consumption |
≈ 80 mA |
| Display |
2.2" color screen |
| Operating Environment |
−30 to +70 °C |
| Storage |
−30 to +80 °C |
| Device Dimensions |
14.5 × 7.2 × 2.2 cm |
| Weight (unit) |
≈ 0.15 kg |
| Protocols |
J1850 PWM/VPW, ISO9141-2, ISO14230-4 KWP, ISO15765-4 CAN |
| Languages |
EN/DE/FR/NL/ES |
Features in Detail
-
DTC: Retrieves generic (P0, P2, P3, U0) and manufacturer-specific (P1, P3, U1) fault codes as well as pending codes.
-
MIL: Clears fault codes and turns off the Check Engine light after repair.
-
Live data: RPM, load, coolant temp, fuel system status, speed, TPS, fuel pressure, fuel consumption monitor, etc. (depends on the car's PID support).
-
O2 & emissions: O2 sensor values and test results (continuous/non-continuous), I/M-related status.
-
Freeze frame: Displays the stored data frame when the fault occurred.
-
Graph & log: Data graph and logging for easier analysis.
Packaging & Content
- 1 × V309 main unit
- 1 × User manual
- 1 × Packaging box
Usage & Quick Start
- Locate the car's OBD2 port (often under the dashboard) and connect the V309.
- Turn the ignition ON and follow the menu instructions.
- Select Read Codes/Live Data/Freeze Frame for diagnosis.
- Address the cause, then select Clear Codes to turn off the MIL if needed.
Safety: Do not clear fault codes without addressing the underlying problem. Intended for 12 V OBD2/EOBD vehicles.
Software & Updates
Standalone tool: No external app required. Update support not specified – contact support if firmware update is requested.
Legal & Terms
-
Disclaimer: Compatibility and PID coverage vary by model year/market. No tool works with all cars.
-
Return/warranty: See store terms and stock status.
FAQ – Frequently Asked Questions
Does the V309 work with my car?
If the car is OBD2/EOBD (12 V) according to the guidelines USA 1996→, EU petrol ~2001→, EU diesel ~2004→, Asia ~2006→, then the chances are good. Coverage may vary.
Does the V309 read ABS/airbag/EPB?
No. The V309 is an OBD2 engine reader (powertrain). For full systems, a different scanner is required.
Can I turn off the "Check Engine" (MIL)?
Yes, after the underlying fault has been fixed, you can clear codes and turn off the MIL.
Does it display live data in graph and text?
Yes. Live data can be displayed as text and graphs, and logged for analysis (depending on the car's PID support).
Does the V309 have O2 and emissions-related tests?
It displays O2 sensor values and I/M status, as well as related test results where the car reports them.
Do I need an app or computer?
No. The V309 is standalone and powered via the OBD2 port.
What languages are available in the menu?
English, German, French, Dutch, and Spanish.
Does the V309 support diesel cars?
Yes, if they are OBD2/EOBD compliant according to the region's start year. Some older diesel models may lack support.
Why doesn't it connect to the car?
Check fuses/OBD power supply (12 V), ignition position ON, clean contacts, and that the car is actually OBD2-compatible.
Can I see fuel consumption data?
Yes, the V309 displays fuel consumption monitor and related PIDs if the car reports them.
What's included in the package?
V309 unit, user manual, and packaging box.
Is the V309 suitable before inspection/emissions testing?
Yes, by reading codes, I/M status, and O2/EVAP-related data, you can prepare the car before the test.
