Bests & Worsts Reviews from Amazon

PROS: The sensor and app work as advertised and solve a longstanding and irritating problem for me. My car is 13 years old and for the last two or three years the check engine light comes on because the catalytic converter is not working well enough to meet exhaust standards. Since I'm not going to replace the catalytic converter, I've had to get the check engine light cleared by a repair shop at least four times now, and a couple of months later it will come back on again. Now, with FIXD, I can verify that the warning light is for the catalytic converter and not for something more serious, and I can clear the light myself without having to go to a repair shop. CONS: The setup instructions could be clearer and the app a little more user-friendly. The instructions basically tell you to download the app, install the sensor, and open the app with bluetooth enabled and the engine running. Well, before you install the sensor, you need to write down the device number that's printed on there, since you'll need to enter it in the app. If you didn't write down the number, you'll have to crawl back under your dash to retrieve the sensor and reinstall it. Also, you have to register the app and get your car's VIN before you can connect to your sensor. Then, you have to enter a bluetooth pairing code (huh?) to pair your phone with the sensor (I guessed "1234" and it worked). The app needs some "cancel" buttons or back arrows for when you've taken a wrong path and want to go back. For instance, if you've renamed the sensor and then tap on the sensor name by mistake, you get a choice of renaming the device again or deleting it, but no choice to cancel. These are one-time setup issues that I expect the company will make clearer soon and they don't affect the operation of the sensor, so I'm not taking any points off.