Although every part of your car is critical to its function, your car battery is the source of power that starts the vehicle. If the battery is not working properly, you will not be able to use any of the electrical components in your car such as the radio, headlights, interior lights and so forth.
Lambda sensors, or oxygen sensors, are designed to help measure the amount of oxygen in your car’s exhaust system. They are located in the back or front of the catalytic converter, based upon the car make and model.
When something happens with our vehicle, we immediately assume that it’s the battery or engine. However, a lot of times the culprit can be the alternator.