Designed to ensure your vehicle's ECU always receives accurate information for optimum efficiency and performance Bosch Sensor Camshaft Position 0 232 103 064 Bosch crankshaft sensors are high quality components engineered for your vehicles ECU system. Crankshaft sensors provide position or speed reference information to the engine management system, to ensure the engine satisfies the emissions requirements and run as the manufacturer intended. These sensors are used in Bosch engine management systems for scanning the tooth sequence of a toothed gear. The resulting signal allows the ECU to calculate speed and reference position of the engine.