ELM327 OBD2 Bluetooth v1.5 (PIC18F25K80, dual PCB)

Short Version

This Super Mini ELM327 is a compact OBD2 Bluetooth dongle built with a PIC18F25K80 chip and a double PCB (double board) – a combination often requested for better stability compared to simpler clones. It is specified as ELM327 OBDII V1.5 and works with all OBD-II compatible vehicles (cars with OBD2), where you want to read fault codes, turn off the check engine light, and view live data on your mobile or computer.

Via Bluetooth, you can use popular apps like Torque, DashCommand, OBD Car Doctor, Auto Doctor, and more on Android, as well as PC software like ScanMaster-ELM, ScanTool.net, and PCMSCAN on Windows. Features include reading and clearing fault codes (DTC) (generic and some manufacturer-specific), turning off MIL/Check Engine, and displaying common real-time parameters like RPM, coolant temperature, speed, fuel trims, intake manifold pressure, timing advance, airflow, TPS, and O2 sensor values (depending on the car).

It supports multiple OBD2 protocols, including ISO 15765-4 CAN, ISO 9141-2, KWP2000 (ISO 14230-4), and SAE J1850 VPW/PWM. The operating voltage is stated as 9–16V, which is suitable for 12V passenger cars. Supported systems in the specification: Android and Windows (older platforms are also mentioned in the product text).

• Chip: PIC18F25K80 (double board)
• Connectivity: Bluetooth 2.0 (wireless)
• Platform: Android & Windows (as per spec)
• Voltage: 9–16V
• Features: read/clear DTCs, turn off MIL, live data

Who is it suitable for?

This super mini ELM327 is suitable for those who want a simple and affordable solution for OBD2 cars when you want to:

• read fault codes when the check engine light illuminates
• clear fault codes (after repair) and turn off the check engine light
• view live data for troubleshooting or monitoring
• log data in apps like Torque (Android) or in PC software on Windows

It is well-suited for DIY mechanics, car enthusiasts, and those who want a "glove compartment" solution.

Features (what you can do)

1. Read fault codes (DTC) – both generic and some manufacturer-specific, and display explanations (the product text mentions 3000+ generic definitions).
2. Clear fault codes and turn off MIL / “Check Engine”.
3. Display live data and sensor data in real-time (car-dependent).

Tip: Do not clear fault codes before documenting them. Take a screenshot or write down the codes first.

Examples of live data (according to product text)

• Engine RPM
• Calculated Load Value
• Coolant Temperature
• Fuel System Status
• Vehicle Speed
• Short Term Fuel Trim
• Long Term Fuel Trim
• Intake Manifold Pressure
• Timing Advance
• Intake Air Temperature
• Air Flow Rate
• Absolute Throttle Position
• Oxygen sensor voltages / associated short term fuel trims
• Fuel Pressure
• …and more (depending on the car's ECU and available PIDs)

Supported protocols

According to the product information, the adapter supports the following OBD2 protocols:

1. SAE J1850 PWM (41.6Kbaud)
2. SAE J1850 VPW (10.4Kbaud)
3. ISO 9141-2 (5 baud init, 10.4Kbaud)
4. ISO 14230-4 KWP (5 baud init, 10.4Kbaud)
5. ISO 14230-4 KWP (fast init, 10.4Kbaud)
6. ISO 15765-4 CAN (11bit ID, 500 Kbaud)
7. ISO 15765-4 CAN (29bit ID, 500 Kbaud)
8. ISO 15765-4 CAN (11bit ID, 250 Kbaud)
9. ISO 15765-4 CAN (29bit ID, 250 Kbaud)

Compatibility (important to know)

OBD2 – primarily engine/emissions

ELM327 is primarily an OBD2 tool, which means it typically provides the best support for engine-related systems (ECM) and emissions-related fault codes. For ABS, airbag, transmission, and brand-unique systems, an app with brand support or a more advanced diagnostic platform is often required.

iPhone/iOS

This model is specified as Bluetooth 2.0 and, according to the specification, primarily supports Android and Windows. iPhone/iOS often does not work with Bluetooth Classic dongles. If you need iPhone support, you should generally choose a BLE adapter.

12V systems

The operating voltage is stated as 9–16V, which is suitable for standard 12V passenger cars. It is not intended for 24V systems.

Apps and software (recommendations)

Android apps (examples from product text)

• Torque
• DashCommand
• OBD Car Doctor
• Auto Doctor
• Mini OBD
• EOBD

Windows software (examples from product text)

• ScanMaster-ELM
• ScanTool.net
• PCMSCAN ELM

Older platforms (mentioned in the text)

• Symbian: OBDScope
• Windows XP / Windows 7/8 (software support mentioned)

Which app is best depends on what you want to do: Torque is popular for live data/graphs on Android, while PC software is often suitable for logging in a workshop environment.

Step-by-step: how to get started

1) Plug in the dongle

1. Locate your car's OBD2 port (usually under the dashboard).
2. Plug in the ELM327 dongle.
3. Turn the ignition to ON or start the car according to the app's instructions.

2) Pair via Bluetooth (Android)

1. Open your phone's Bluetooth settings and search for the device.
2. Pair (PIN code is often 1234 or 0000 if the app asks).
3. Open your OBD app and select the adapter as the connection.

3) Read fault codes and live data

1. Read DTC codes and save them (screenshot or note).
2. Address the fault.
3. Clear fault codes and verify that they do not return.
4. Use live data to confirm that values appear reasonable.

Troubleshooting

The app cannot find the adapter

• Check that the ignition is ON (the OBD port may not have power otherwise).
• Close the app completely and restart Bluetooth.
• Try to “forget” the device in Bluetooth and pair again.

It connects but shows no data

• Check that the car is OBD2 compatible.
• Try another app.
• Select fewer live data parameters at a time (some dongles become slow otherwise).

Fault codes can be read but not ABS/Airbag

• This is normal – ELM327 is primarily for engine/OBD2. For other systems, more advanced diagnostics or brand support are often required.

iPhone not working

• Bluetooth 2.0 (Classic) often does not work on iOS. Choose the BLE variant if you need iPhone support.

Specifications

Note: The underlying information mentions both “Software Version: V2.1” and “Hardware Version: V1.5”. In the ELM world, these designations are often used differently by various suppliers. View them as the supplier's version lines, not as a guarantee of exact ELM firmware.

Package contents

• 1 × Super Mini ELM327 Bluetooth OBD2 dongle (PIC18F25K80, double PCB)

FAQ – Frequently Asked Questions

1) Does it work with iPhone?

It is specified for Android/Windows and uses Bluetooth 2.0. iPhone often requires BLE or WiFi – so this one is primarily for Android.

2) Does it work on all cars?

It is designed for OBD-II compatible vehicles. Not all cars are OBD2, and functions vary depending on the car.

3) Can it read ABS and airbag?

Often not via standard OBD2. For ABS/SRS, brand-specific diagnostics or advanced scanners/apps with proper support are often required.

4) Can I turn off the check engine light?

Yes, it can clear fault codes and turn off the MIL (if the fault is not actively present).

5) Which apps can I use?

Examples: Torque, DashCommand, OBD Car Doctor, Auto Doctor, etc. (Android) as well as ScanMaster-ELM, ScanTool.net, etc. (Windows).

6) Does it draw power if left plugged in?

Yes, standby is specified as 25 mA. Do not leave the dongle plugged in permanently if you want to minimize the risk of a drained battery.

7) Is it suitable for 24V vehicles?

The operating voltage is 9–16V, so it is designed for 12V systems.

8) What does “PIC18F25K80” mean?

It is the main chip in the dongle. This chip type is often stated as more stable compared to some simpler clone solutions.

9) What does “double PCB” mean?

That the adapter has a double circuit board layout (two-board/double board), which is often used to improve construction and stability.

10) Where is the OBD2 port located?

Often under the dashboard near the steering column, but placement varies between car brands.

Notices & Disclaimer

• OBD2 Limitation: ELM327 primarily provides engine/emissions-related diagnostics. Other systems may require advanced diagnostics.
• Do not clear randomly: Save fault codes before clearing and address the root cause.
• Power Consumption: Dongles can draw power in standby. Unplug if the car is left standing for a long time.
• iOS: Bluetooth Classic often does not work with iPhone. Choose BLE/WiFi if you need iOS support.
• Safety: Do not use the diagnostic app while driving.

Summary

This Super Mini ELM327 Bluetooth v1.5 with PIC18F25K80 and double PCB is a convenient choice for those who want to read/clear fault codes and view live data on OBD2 cars via Android or Windows. With support for the most common OBD2 protocols and broad app support, it is perfect as an affordable "basic dongle" in the glove compartment – especially when you want to get started quickly.