What Is an Oxygen (Lambda) Sensor?
Oxygen sensors keep your engine running cleanly and efficiently. A Cranbourne West specialist explains.
What it is & what it does
Oxygen (lambda) sensors measure the oxygen in the exhaust so the engine computer can fine-tune the fuel mixture. Cars have several — before and after the catalytic converter — and they’re central to economy and emissions.
They wear out over time and are a common check-engine-light cause.
Signs of trouble & how we help
A failing O2 sensor causes poor economy, rough running, higher emissions and a check-engine light — and can mimic a “catalytic converter” fault. Replacing the right one fixes it.
We read live sensor data to identify the exact faulty sensor before replacing it.
Questions about your car? Just ask.
Understanding what’s under the bonnet makes servicing decisions easier — and we’re always happy to explain what your car needs and why, in plain English.
Book a service or a check with a Cranbourne West specialist online in 60 seconds, or call 03 8782 0711.
What Is an Oxygen (Lambda) Sensor? — FAQ
It measures exhaust oxygen so the engine can fine-tune the fuel mixture for economy and low emissions.
Poor economy, rough running, higher emissions and a check-engine light.
Yes — which is why we confirm with live data before replacing an expensive cat.
Several — before and after the cat. We identify the faulty one.
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