HI All....need some help on finding the correct TPS. I go to the locals and they stock sensor that shift from left to right. Mine is the other way...from driver side to passenger. And my original is slotted. I get the 21,22 error codes on scan tool but do not get a hard foul as in Engine light coming on during operation. Is it possible with my slotted sensor is just out of adjustment ???? How could I determine that? Are these sensors known to go bad and why is the cost over 130.00 dollars??? They seem so simple..just a big resistor. Like John Mellunkamp(sp)...I'm just an idiot. Thanks for any replies..