The underrated lambda probe
Lambda probe (or oxygen sensor) is a very important part of the exhaust system. Its operation has a great influence on exhaust emissions and fuel consumption.
A faulty lambda probe leads to an excess of the exhaust gas toxicity limit. Other negative consequences of a malfunctioning lambda probe are a significant increase in fuel consumption, up to 50 percent, and a decrease in engine power. To prevent such unfavorable situations, it is recommended to check the lambda probe every 30 XNUMX. kilometers.
“Regular checks and possible replacement of a worn lambda probe are beneficial for both economic and environmental reasons,” says Dariusz Piaskowski, owner of Mebus, a company specializing in the repair and replacement of exhaust systems. – Maintenance of this component is inexpensive compared to the damage that can result from its inoperability. A broken lambda probe has a big impact on catalyst failure and rapid wear. This is due to the unfavorable composition of the exhaust gas mixture, which leads to damage to the catalyst and the need to replace it.
The wear of the lambda probe is affected by the working environment. It is exposed to constant thermal, chemical and mechanical stress, so older sensors can inflate exhaust emissions. Under normal conditions, the probe works properly for about 50-80 thousand. km, heated probes reach a service life of up to 160 thousand km. The element that causes the oxygen sensor to wear out faster or be permanently damaged is low octane, contaminated or leaded fuel.
“Probe wear is also accelerated by oil or water particles that can enter the exhaust system in various ways,” said Dariusz Piaskowski. – Malfunction of the electrical system can also cause damage. It should be remembered that monitoring the performance of the lambda probe affects our safety, because as a result of its failure, the catalyst can even ignite, and hence the entire car.
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