The presence of deposits in the form of soot, white, gray, in the form of shiny plaques should suggest that it needs to be cleaned before checking the lambda probe.
Checking the lambda probe using a diagnostic device In most cases, the internal combustion engine itself tells whether there are any malfunctions in the operation of the sensors.
How to check a lambda probe with a tester with a multimeter, oscilloscope, do it yourself Before checking the lambda probe, which is also an oxygen sensor, you need to understand what it is intended for and how it works, what is the relationship of the sensor with the electronic control unit and the fuel system of the car as a whole.
Checking the lambda probe signal To check the lambda probe heater, it is advisable to have an oscilloscope or an oscilloscope, but a motorcycle tester or at least a dial gauge, but not a digital voltmeter, is also suitable.
Checking the lambda probe heater In addition to measure the voltages by a multimeter, you can also measure the resistance to check the health of the heater (two white wires), but it will be necessary to switch the tester to Omms.
Checking the lambda probe for serviceability There are several ways to check, you can do everything with your own hands, without contacting a car service.
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