Lambda Solutions
Lambda sensor faults affect fuel economy, emissions, and engine performance — accurate diagnosis means the right fix, first time.
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Lambda sensors (also called oxygen sensors) monitor exhaust gas composition and feed data back to the ECU, allowing it to maintain the correct air-fuel ratio for clean combustion. When a lambda sensor fails or degrades, the ECU loses accurate feedback — leading to rich or lean running conditions, poor fuel economy, failed emissions tests, rough running, and engine management warning lights.
Lambda sensor issues are common, particularly on higher-mileage vehicles. There are typically multiple sensors in a modern exhaust system, and diagnosing which has failed — and whether the fault is the sensor itself or something upstream causing it to read incorrectly — requires proper diagnostic equipment rather than guesswork.
We carry out a full diagnostic assessment, identify the faulty sensor or underlying cause, and carry out the appropriate repair. In most cases, lambda sensor replacement is a straightforward job; getting the diagnosis right first is what saves you replacing parts unnecessarily.
Precise fault diagnosis
We identify which sensor has failed — and whether the problem is really the sensor.
Restored fuel economy
A correctly reading lambda sensor allows the ECU to maintain optimal fuelling.
Emissions test ready
Lambda faults are a common cause of MOT emissions failures — fix it before the test.
Fast, reliable repair
Sensor replacement is typically a quick job once the fault is correctly diagnosed.
Frequently asked
What are the symptoms of a failing lambda sensor?
Common symptoms include a check engine light, poor fuel economy, rough or hesitant running, and failed MOT emissions tests.
How many lambda sensors does my car have?
Most modern vehicles have at least two — a pre-catalyst and a post-catalyst sensor. Some have more. We'll identify which is at fault during diagnosis.
Can I drive with a faulty lambda sensor?
The car will usually still run, but fuel economy and emissions will suffer, and ignoring the fault long-term can cause damage to the catalytic converter.
How long does lambda sensor replacement take?
Usually one to two hours, depending on the vehicle and sensor location. Some sensors are straightforward to access; others are more involved.
Mobile remapping across the South West
We come to you — Weston-super-Mare and the towns right across the region. A few of the areas we cover:
Ready to transform the way you drive?
Call 01934 245246 · info@carbontuning.co.uk