Encountering issues connecting your Bafx Bluetooth Obd2 Reader to your 1999 Miata can be frustrating, especially when it seems to work perfectly with other vehicles. Many Miata owners, particularly those with NA and NB models, utilize OBD2 readers for diagnostics and performance monitoring. If you’re facing a “No response from vehicle ECU” error with your BAFX reader on your ’99 Miata, you’re not alone. Let’s explore common reasons and troubleshooting steps to get you connected.
One of the first questions Miata owners often have is about protocol compatibility. While OBD2 is a standard, early implementations and specific car models can sometimes be particular. It’s generally not necessary to manually specify a protocol with a 1999 Miata, as most OBD2 readers, including the BAFX, are designed to auto-detect. However, ensuring your reader supports the standard OBD2 protocols, such as ISO 9141-2 or SAE J1850 PWM (which are common for vehicles of this era), is a good starting point. The BAFX Bluetooth OBD2 reader typically covers these, but it’s worth double-checking the specifications.
Another point of confusion can be the location of the OBD2 port itself. You mentioned finding a port under the fuse box cover to the left of the driver’s knee. This is indeed the correct location for the OBD2 port in a 1999 Miata (NB model). Mechanics might sometimes access it from a slightly lower angle in the footwell, but they are accessing the same port. It’s unlikely there’s another hidden OBD2 port. The location can feel a bit inconvenient if you intend to leave the reader plugged in while driving, but this is the standard placement.
If your BAFX reader works with your ’98 Civic, it indicates the reader itself is functional. However, some vehicles can be more sensitive to certain OBD2 readers than others. While the BAFX is generally well-regarded and compatible with a wide range of vehicles, including many Mazda models, there could be specific nuances with the ’99 Miata’s ECU. Before considering replacing your BAFX Bluetooth OBD2 reader, ensure you’ve tried a few basic troubleshooting steps.
Start by verifying the Bluetooth pairing process again. Make sure your Android device (Samsung Galaxy Player 5.0) is correctly paired with the BAFX reader using the code “1234”. Within the Torque app (or Car Gauge Lite), double-check that you’ve selected the correct Bluetooth device to connect to. Sometimes, cycling the ignition (turning the car off and on again) can help reset the ECU and communication pathways. Also, ensure the engine is running when attempting to connect, as some readers require the engine to be on for full ECU communication.
If these basic steps don’t work, and you suspect a compatibility issue, researching online forums specific to Miata NB models and OBD2 reader compatibility can be insightful. You might find recommendations for specific OBD2 readers that are known to work flawlessly with the ’99 Miata. While the BAFX Bluetooth OBD2 reader is a solid choice for many vehicles, it’s possible, though less common, that it might not be perfectly compatible with every single car model.
In conclusion, while the BAFX Bluetooth OBD2 reader is generally a reliable tool, ensure basic troubleshooting steps are taken, verify port location, and consider model-specific compatibility if issues persist with your ’99 Miata. Exploring online Miata communities might provide further insights into recommended OBD2 readers if your current one continues to face connection problems.
