A plus for the environment since 1976: Invented by Bosch, Lambda sensors have made a significant contribution in order to fulfill current emission standards. To ensure their reliable operation, they are to be checked or replaced regularly. Since Bosch first invented lambda sensors, the company has promoted further development of these exhaust-gas sensors launching several innovations. The result: Every day, more than 50 million pieces leave the plants of the world’s largest lambda-sensor producer and technological leader – Bosch.