That pesky check engine light in your Subaru Outback – it’s enough to interrupt any adventure. Instead of immediately heading to the dealership and facing potentially hefty diagnostic fees, you can take control and understand what’s happening under the hood yourself. An OBD2 scanner is the key to unlocking your Subaru’s onboard computer and deciphering those cryptic warning lights.
Since 1996, every vehicle in the U.S., including your Subaru, has utilized the On-Board Diagnostic II (OBD2) protocol. This system continuously monitors a vast array of vehicle parameters, from the engine’s temperature to the efficiency of the catalytic converter. When something goes amiss, the system logs a Diagnostic Trouble Code (DTC) and illuminates the check engine light. An OBD2 scanner acts as a translator, allowing you to access these codes and understand the problem.
While basic scanners can read standardized codes, more advanced options can delve into manufacturer-specific codes, offering a deeper level of insight into your Subaru’s health. To help you choose the right tool, we’ve compiled a list of top OBD2 scanners, based on recommendations from the SubaruOutback.org community, to empower you in diagnosing and maintaining your Subaru.
1. OBDLink MX+ – Subaru Community Favorite
The OBDLink MX+ stands out as a favorite among Subaru owners for good reason. Its rapid Bluetooth connection provides real-time, live data streaming from your Subaru’s engine computer directly to your smartphone or tablet. Unlike some budget Bluetooth scanners limited to Android, the OBDLink MX+ is compatible with iOS, Android, and Windows devices via its free companion app. This scanner reads both basic and Subaru manufacturer-specific codes, offering comprehensive diagnostic capabilities. Backed by a three-year warranty and designed for safe, continuous connection to your vehicle, the OBDLink MX+ is a robust and user-friendly choice for Subaru diagnostics.
2. ScanGauge II – Multi-Function Subaru Tool
The ScanGauge II elevates the OBD2 scanner beyond basic diagnostics by functioning as an auxiliary gauge display for your Subaru. Compatible with all OBD2 compliant vehicles (1996 and newer), it not only reads and clears both current and pending trouble codes but also presents a wealth of real-time vehicle data on its compact screen. Beyond standard parameters like RPM and speed, the ScanGauge II can display intake air temperature, fuel pressure, ignition timing, coolant temperature, and even fuel economy metrics such as instantaneous and average MPG, and cost per mile. Subaru-specific gauges, including boost pressure, are also accessible, making the ScanGauge II a versatile tool for both diagnostics and performance monitoring.
3. Innova 5610 – Advanced Subaru Diagnostics
The Innova 5610 offers comprehensive diagnostic capabilities for Subaru vehicles, handling both basic and manufacturer-specific trouble codes. Its large color display enhances readability of data and trouble codes, and it can also graph live data from your Subaru’s sensors. Beyond engine codes, the Innova 5610 can scan virtually every module in your Subaru, including tire pressure monitoring systems. A standout feature is its bi-directional control capability, typically found in professional-grade tools. This allows advanced DIYers to command modules like the EGR valve to open or close for functional testing, or disable modules for isolated diagnostics, providing a deeper level of troubleshooting for complex Subaru issues.
4. BlueDriver Pro – Subaru Repair Insights
The BlueDriver Pro is another highly recommended OBD2 scanner praised for its in-depth diagnostic and repair assistance for Subaru vehicles. Like the others, it reads and clears standard OBD2 codes, but it also captures freeze frame data, providing a snapshot of vehicle conditions when a trouble code was triggered. Live data streaming allows for real-time sensor monitoring. A particularly useful feature for Subaru owners is the smog check readiness test, ensuring your vehicle is ready for emissions testing. Furthermore, the BlueDriver Pro generates repair reports for specific trouble codes, offering likely causes, owner-reported fixes, and other helpful information to guide your Subaru repair process.
5. Autel AutoLink AL329 – Reliable Subaru Diagnostics
Autel is a recognized name in professional automotive diagnostic equipment, often seen in professional mechanic workshops. While they offer high-end systems, the Autel AutoLink AL329 provides a more accessible, standalone OBD2 scanner for DIY Subaru owners. If you prefer a tool that works without smartphones or apps, the AL329 is a solid choice. It features a color screen for easy code and data viewing and retrieves both generic and manufacturer-specific codes. It also displays emissions readiness status and freeze frame data. While it may lack some advanced features of higher-end models, the Autel AutoLink AL329 delivers essential diagnostic functions at an affordable price, making it a reliable tool for basic Subaru check engine light issues.
Investing in an OBD2 scanner is a smart move for any Subaru owner. It empowers you to understand your vehicle’s health, potentially saving you time and money on unnecessary dealership visits. Whether you choose a basic code reader or a more advanced tool, having an OBD2 scanner in your garage is invaluable for maintaining your Subaru and keeping those adventures on track.
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