I had a car that had a new Sensor put into it that kept malfunctioning and shutting down the engine. The code reader kept saying the sensor was out although I knew the sensor was replaced. The car sat for 4 years until I finally cut open the engine to see what was going on since the sensor ohm test was reading fine. I found a slight warble in the plate the mechanic must have overlooked and took a chance ordering the part to replace