What does a lambda sensor do?

The lambda sensor measures oxygen content in the car's exhaust, ensuring the engine control unit (ECU) can adjust the air-fuel ratio in the engine itself and reduce harmful emissions as a result.

What happens if the lambda sensor is faulty?

If the lambda sensor is faulty, it won't send data to the ECU. This can lead to increased fuel consumption and higher polluting emissions, as well as a clogged catalytic converter.

Can I drive my car with a faulty lambda sensor?

It's not recommended to drive with a faulty lambda sensor, due to the risk of engine damage and bad emissions produced. A broken lambda sensor can also be classed as a fail on your MOT.

Is it harmful to drive a car with a bad oxygen sensor?

Continuing to drive with a faulty oxygen sensor will only make the problem worse. Eventually, you may experience poor acceleration, engine misfires, and failed emission tests.