this post was submitted on 04 Oct 2025
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If by actually help you mean does it ever fix things? No, an OBD reader will never fix a problem, it is just a diagnostic tool, it helps locating a problem without having to essentially do a full body scan by hand, kinda as if you had a leak in a house, and instead of having to inspect every pipe in the house tearing down walls, you just use a tool that tells you "leak found, upstairs shower, hot side valve", yes you still could have found the leak just by hand if you wanted, but it might have taken days or weeks, and tons of money replacing unnecessary pipes.
Its good you have a shop that did the OBD readout and gave you suggestions for free, most shops around me you'll be paying hundreds for that, but I agree it still suck regardless that you are down a path that is gonna cost thousands, for what it is worth, if you have an airbag/SRS problem, an OBD reader definitely wouldn't help as anything SRS is always really expensive, usually not just a case of plug and play parts, even just a broken wire isn't just a simple soldering job and hardware adaptions very much are vehicle specific and can be timely if calibration is necessary
Taking the analogy t to health…… a thermometer is an excellent diagnostic tool I can use to decide whether to take other actions like fever reducer, staying home, deciding whether so seek medical attention. It’s useful to me. An MRI machine may be very useful to a doctor but if I could have one in my home it would not be. It may be a great tool but I can’t use it to decide on my best course of action nor save money.
I suppose it depends on how much work you do yourself (and admittedly I do less than I used to), but I’ve never had such a readout change what I do. Even in the above example, addressing the error code was something I was going to have to have someone do and I have a shop trustworthy enough to point out when there is a potentially cheaper option for me