I’m working on my 2003 Toyota Corolla and, as a hands-on DIYer, I’ve been using a basic Bluetooth OBD2 reader for about a year now, which has been quite helpful. However, I’m looking to upgrade to an Obd2 Advanced Scanner to gain deeper diagnostic capabilities, specifically the ability to perform command functions like controlling the purge valve. I’m open to investing in a top-tier scanner if necessary, understanding that quality often comes with a price. Ideally, I’d find a scanner that offers excellent value and is suitable for my current needs and future automotive diagnoses.
Currently, I’m tackling a series of codes on my Corolla: P0171, P0420, P0441, P0442, and P0446. I’ve subscribed to AllData to assist with the repair procedures. So far, I believe I’ve pinpointed the issue for the P0171 code. My fuel pressure tests showed good pressure at idle, around 48 psi. However, it failed the leak-down test, dropping below 21 psi within five minutes after the car was turned off. This indicates a fuel system problem, possibly with the pump, regulator, or injectors. I’m also addressing a manifold gasket leak, confirmed by using carburetor cleaner to observe changes in idle speed. An Autoline Pro smoke machine with a built-in compressor is on its way to further aid in leak detection.
With the fuel and intake leak issues largely identified, I’m now focused on the remaining EVAP system codes. Consulting AllData, the diagnostic procedures require using a handheld tester connected to the OBD2 port to execute commands on the switch valves. This is where my current basic scanner falls short, and the necessity for an obd2 advanced scanner becomes clear.
Therefore, I’m seeking recommendations for a reliable obd2 advanced scanner that would be beneficial for diagnosing these EVAP codes and any other automotive issues I might encounter in the future. Ideally, this scanner would allow me to perform the necessary actuator tests for the EVAP system, saving me from resorting to manual methods like directly powering the switch valve to test its functionality. Any suggestions for a capable and user-friendly obd2 advanced scanner would be greatly appreciated as I aim to enhance my DIY diagnostic toolkit.
