I have an old car that showed the barometric pressure signal on the dashboard for the second time after I had a technician replace 1 sensor 2 years ago. I figured that now that I knew what the cost was, buying the scan tool, sensor, and installation tools was almost worth the service. So I bought this sensor and it worked great. Since the car didn't have a programmable screen for the sensors, I also had to buy a tool to store them in the car via the OBD port. It worked great.