I was getting the P1400 OBD error and replacing my Diff Pressure Sensor with this unit got rid of the error. I like the fact that it came with the connector - i did not need it but the metal clip became handy when I lost my original clip. 4 stars only because the plastic housing is cracking (hairline) at the hold-down screw location it is a used part so this is not really a deal breaker; bottom line it got the job done!