1. Úvod
The Dollarfix EF18 OBD2 Scanner is a professional diagnostic tool designed to help vehicle owners and technicians identify and resolve issues related to their vehicle's On-Board Diagnostics (OBD-II) system. This device provides comprehensive diagnostic functions, including reading and clearing trouble codes, viewing live data, checking I/M readiness, and more. It is compatible with most OBD-II compliant vehicles manufactured after 1996.
2. Konec produktuview
The EF18 scanner offers a range of features to assist in vehicle diagnostics:
- Plné funkce OBD2: Identifies and clears check engine light codes.
- Comprehensive Diagnostic Data: Accesses freeze frame data, live data streams, and real-time graphs for various vehicle metrics (e.g., fuel system status, engine RPM, coolant temperature).
- I/M Readiness Check: Verifies vehicle compliance with emissions standards.
- Battery Health Monitor: Tests 12V battery's real-time voltage.
- Univerzální kompatibilita: Works with 98%+ OBD-II compliant vehicles manufactured after 1996, supporting multiple OBD protocols.
- Podpora více jazyků: Podporuje 8 jazyků pro pohodlné používání.

Image: The Dollarfix EF18 OBD2 Scanner displaying its main diagnostic functions, including Read Code, Clear Code, Live Data, I/M Readiness, Vehicle Info, Freeze Frame, EVAP Monitor Test, O2 Monitor Test, and On-board Monitor Test.
3. Bezpečnostní informace
Please read and understand all safety instructions before using the Dollarfix EF18 OBD2 Scanner. Failure to follow these instructions may result in injury or damage to the device or vehicle.
- Always operate the vehicle in a well-ventilated area.
- Do not wear loose clothing or jewelry when working on a vehicle.
- Keep a fire extinguisher suitable for gasoline/electrical fires nearby.
- Avoid contact with hot engine parts and moving components.
- Ensure the vehicle is in PARK (automatic) or NEUTRAL (manual) with the parking brake engaged before performing any tests.
- Do not attempt to drive the vehicle while the scanner is connected or in use.
- Always refer to your vehicle's service manual for specific procedures and safety precautions.
4. Obsah balení
Ověřte, zda jsou v balení přítomny všechny položky:
- Dollarfix EF18 OBD2 Scanner Unit
- Integrated OBD-II Cable
- Uživatelská příručka (tento dokument)
5. Nastavení
Follow these steps to set up and connect your Dollarfix EF18 OBD2 Scanner:
- Vyhledejte port OBD2: The OBD2 port is typically located under the dashboard on the driver's side of the vehicle. Refer to your vehicle's manual if you cannot find it.
- Připojení skeneru: Plug the integrated OBD-II cable from the EF18 scanner into the vehicle's OBD2 port. Ensure a secure connection.
- Zapněte vozidlo: Turn the vehicle's ignition to the 'ON' position (engine off) or start the engine, depending on the diagnostic function you intend to perform. The scanner will power on automatically.

Image: Visual guide showing the three steps for connecting the EF18 scanner: 1. Plug into OBD2 Port, 2. Turn on the car, 3. Start diagnosis.
6. Návod k obsluze
The Dollarfix EF18 scanner features a user-friendly interface with four main buttons:
- Šipky nahoru/dolů: Procházejte možnostmi nabídky.
- Tlačítko OK: Potvrzení výběru nebo vstup do menu.
- Tlačítko návratu: Návrat na předchozí obrazovku nebo ukončení funkce.
6.1 Možnosti hlavní nabídky
Upon powering on, the main menu typically displays:
- OBDII/EOBD: Access standard OBD-II diagnostic functions.
- Vyhledávání: Hledat Diagnostic Trouble Code (DTC) definitions.
- Baterie: Perform a battery voltage test.
- Nastavení: Configure device settings (e.g., language).
6.2 Čtení a mazání diagnostických chybových kódů (DTC)
- Z hlavní nabídky vyberte OBDII/EOBD a stiskněte OK.
- Vybrat Číst kódy na view aktuální, čekající nebo trvalé kódy DTC.
- Chcete-li vymazat kódy, vyberte Vymazat kódy a stiskněte OK. Confirm the action when prompted. Note: Clearing codes will turn off the Check Engine Light but will not fix the underlying problem. Address the issue before clearing codes.
6.3 Živý datový tok
This function displays real-time operational parameters from the vehicle's sensors.
- z OBDII/EOBD menu, vyberte Živá data a stiskněte OK.
- Můžete view data in numerical format or as graphs. Use the arrow buttons to scroll through various parameters.
6.4 Freeze Frame Data
Freeze Frame Data records engine conditions at the moment a Diagnostic Trouble Code (DTC) is set.
- z OBDII/EOBD menu, vyberte Zmrazit rám a stiskněte OK.
- Review the recorded parameters to understand the conditions when the fault occurred.
6.5 Stav připravenosti I/M
This function checks the status of the vehicle's emission-related monitoring systems.
- z OBDII/EOBD menu, vyberte Připravenost I/M a stiskněte OK.
- The display will show whether various monitors are 'OK' (completed) or 'INC' (incomplete). This is crucial for emissions testing.
6.6 O2 Sensor Test and EVAP System Test
These tests monitor specific components of the emission control system.
- z OBDII/EOBD menu, vyberte Test senzoru O2 or Test systému EVAP a stiskněte OK.
- Follow the on-screen prompts to perform the tests and view výsledky.

Image: The Dollarfix EF18 scanner displaying results for Oxygen Sensor Test and EVAP System Test, with a vehicle in the background.
6.7 Voltage Test
Quickly check your vehicle's 12V battery voltage.
- Z hlavní nabídky vyberte Baterie a stiskněte OK.
- Skener zobrazí aktuální stav nabití baterietage.
6.8 Vyhledávání DTC
Find definitions for Diagnostic Trouble Codes.
- Z hlavní nabídky vyberte vyhledávání a stiskněte OK.
- Enter the DTC (e.g., P0006) using the arrow buttons to change characters and OK potvrdit.
- Skener zobrazí definici kódu.

Image: The Dollarfix EF18 scanner interface demonstrating the DTC Lookup function, alongside icons representing Freeze Frame, Live Data Monitor, Battery Voltage Display, and Read Vehicle Information.
7. Údržba
Proper care and maintenance will ensure the longevity and reliable operation of your Dollarfix EF18 OBD2 Scanner.
- Čištění: K čištění vnější strany skeneru používejte měkký, suchý hadřík. Nepoužívejte abrazivní čisticí prostředky ani rozpouštědla.
- Skladování: Store the device in a clean, dry environment, away from extreme temperatures, direct sunlight, and excessive moisture.
- Péče o kabely: Avoid bending or crimping the OBD-II cable excessively. Store it neatly to prevent damage.
- Aktualizace softwaru: Zkontrolujte výrobce webpravidelně kontrolujte dostupné aktualizace softwaru na webu, abyste zajistili optimální výkon a kompatibilitu.
8. Řešení problémů
If you encounter issues with your Dollarfix EF18 OBD2 Scanner, refer to the following common problems and solutions:
- Skener se nezapne:
- Ujistěte se, že je kabel OBD-II bezpečně připojen k portu vozidla.
- Verify the vehicle's ignition is in the 'ON' position or the engine is running.
- Check the vehicle's fuse for the OBD-II port (consult your vehicle's manual).
- Chyba komunikace s vozidlem:
- Confirm the vehicle is OBD-II compliant (most vehicles after 1996).
- Ensure the ignition is 'ON' or the engine is running.
- Check for any damage to the OBD-II cable or connector.
- Try connecting the scanner to a different OBD-II compliant vehicle to rule out scanner malfunction.
- Nesprávné zobrazení dat:
- Ensure the vehicle's engine is at operating temperature for accurate sensor readings.
- Verify that the correct vehicle protocol is automatically detected.
9. Specifikace
| Funkce | Detail |
|---|---|
| Model | EF18 |
| Značka | Dollarfix |
| Zdroj napájení | Corded Electric (via OBD-II port) |
| Operační systém | ARM System |
| Velikost obrazovky | 1.7 palce |
| Hmotnost položky | 231 g |
| Rozměry balíku | 17.3 x 7.29 x 6.91 cm |
| Podporované protokoly | ISO14230-4 KWP, ISO15765-4 CAN, ISO9141-2, J1850 VPW, and more |
| Kompatibilita | OBD-II compliant vehicles (cars, 12V trucks, SUVs, MPVs, sedans) after 1996 |
10. Záruka a podpora
For warranty information and technical support, please refer to the documentation provided with your purchase or contact Dollarfix customer service directly. Details are typically available on the manufacturer's official webmísto.