The check engine light in your Subaru Outback is more than just an annoying dashboard icon; it’s a signal from your car’s complex computer system indicating a potential issue. Instead of immediately heading to a mechanic and facing potentially hefty diagnostic fees, a smart Subaru owner can take control. An OBD2 scanner is your key to understanding what’s going on under the hood, allowing you to troubleshoot problems efficiently and potentially save money on repairs.
Since 1996, every vehicle in the U.S., including your Subaru, has been equipped with the On-Board Diagnostic II (OBD2) system. This system monitors a vast array of vehicle data, from engine temperature to sensor readings, all communicated through a network that your car’s ECU (Engine Control Unit) uses to optimize performance. An OBD2 scanner plugs into this network, giving you access to this wealth of information, including standardized Diagnostic Trouble Codes (DTCs) that trigger the check engine light. For Subaru vehicles, the best OBD2 scanners go a step further, accessing manufacturer-specific codes for deeper insights.
Based on recommendations from the SubaruOutback.org community, here are some of the top OBD2 scanners worth considering for your Subaru:
1. OBDLink MX+: The Subaru Community’s Choice
OBDLink is a well-regarded brand in the OBD2 scanner market, and the MX+ model stands out as a favorite among Subaru owners. Its key advantage is a rapid Bluetooth connection, providing real-time live data from your Subaru’s engine computer directly to your smartphone or tablet. Unlike some budget Bluetooth scanners that are limited to Android, the OBDLink MX+ is compatible with iOS, Android, and Windows devices, offering broad accessibility. The OBDLink app, available for free, enhances its usability. Beyond reading basic OBD2 codes, the MX+ delves into manufacturer-specific codes, offering more detailed diagnostics for your Subaru. Its reliability is further backed by a three-year warranty, and its safe design allows it to remain plugged into your Subaru without draining the battery.
2. ScanGauge II: More Than Just a Subaru Scan Tool
The ScanGauge II distinguishes itself by functioning as both an OBD2 scanner and a customizable gauge display for your Subaru. It reads and clears both current and pending diagnostic trouble codes on all OBD2 compliant vehicles (1996 and newer). However, its unique feature is the real-time display of various vehicle parameters on its compact screen. This backlit display can show crucial information like RPM, speed, intake air temperature, fuel pressure, and even fuel economy metrics. For Subaru enthusiasts interested in performance, it can also display parameters like boost pressure (vehicle dependent). The ScanGauge II effectively turns your OBD2 port into a multi-functional information center, providing valuable insights beyond just error codes.
3. Innova 5610: Advanced Diagnostics for Subaru DIYers
The Innova 5610 OBD2 scanner offers comprehensive diagnostic capabilities for Subaru vehicles, handling both basic and manufacturer-specific trouble codes. Its large color screen enhances user-friendliness, making it easy to read codes and data graphs. It scans a wide range of Subaru modules, including tire pressure monitoring systems. What sets the Innova 5610 apart is its bidirectional control feature. This advanced functionality, typically found in professional-grade scanners, allows you to send commands to vehicle modules and sensors for testing purposes. For example, you can command an EGR valve to open or close to verify its operation, or disable a module for isolated testing – features that empower the serious DIY Subaru mechanic with dealer-level diagnostic control.
4. BlueDriver Pro: Subaru Diagnostics with Repair Guidance
The BlueDriver Pro is another highly recommended OBD2 scanner, praised for its user-friendly interface and helpful features for Subaru owners. It reads and clears all standard OBD2 codes and provides freeze frame data, capturing the conditions when a trouble code was triggered. Live data streaming allows you to monitor sensor readings in real-time. A particularly useful feature for Subaru owners is its smog check readiness test, indicating if your vehicle has completed the necessary internal tests after code resets, essential for passing emissions inspections. Furthermore, the BlueDriver Pro generates repair reports for specific trouble codes, offering likely causes, owner-reported fixes, and other valuable troubleshooting information, guiding you through the repair process.
5. Autel AutoLink AL329: Professional Subaru Diagnostics for the DIYer
Autel is a leading name in professional automotive diagnostic equipment, often seen in workshops and garages. While they offer high-end systems, the Autel AutoLink AL329 provides a more accessible option for Subaru DIY enthusiasts. This standalone tool is user-friendly, eliminating the need for Bluetooth or smartphone apps – simply plug it in and diagnose. While not as feature-rich as Autel’s top-tier models, the AL329 still delivers essential diagnostic functions. It reads generic and manufacturer-specific codes, checks emissions readiness, and displays freeze frame data. For Subaru owners seeking a reliable, no-frills OBD2 scanner that gets the job done at an affordable price, the Autel AutoLink AL329 is a strong contender.
Investing in the best OBD2 scanner for your Subaru empowers you to understand your vehicle better and address issues proactively. Whether you’re looking for basic code reading or advanced diagnostic capabilities, there’s an OBD2 scanner on this list to suit your needs and budget, helping you keep your Subaru running smoothly for all your adventures.
