TechSmart B96002 Engine VVT Eccentric Shaft Sensor The Eccentric Shaft Position Sensor is used to give feedback the ECU for the Valvetronic eccentric camshaft that controls variable intake valve lift. Common failure for this part will be a faulty seal resulting in oil contimation. This will not throw a code or check engine light but will be noticable in the vehicles performance; symptoms include lack of power and response, jerky shifts, poor performan All TechSmart eccentric shaft position sensors are made from high quality material to ensure peak performance is restored. All TechSmart eccentric shaft postion sensors are guaranteed to meet or exceed OE performance providing today's technician with the quality parts needed to get the job done right, the first time