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Is200 Oxygen Sensor


Athos
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I got this info from Lexus IS200 Technical CD and would like your comments.

Oxygen sensor (Bank 1,2 sensor) the one in engine compartment.

Heater Resistance must be

11 - 16 Ω at 20 ° C (68 ° F)

23 - 32 Ω at 800 ° C (1472 ° F)

Using an reliable ohmmeter i measured mine and found it to be ok at 20 ° C.

But reading when hot is 18.3 Ω that is lower than is supposed to be.

Manual says that it has to be changed if measured values are out of limits.

Do you believe that i have to get a new one?

Does this influence fuel consumption?

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I do not have a way to measure temperature.I believe driving 30 min in Cyprus conditions the exhaust pipe where sensor is located should yet to its max temp whatever that is.

I measured the resistance after 5 min, 10 and 30 min driving and its value is around 17 to 18 Ohms.

I have been monitoring the fuel consumption for a year and is on average 25 mpg mostly city driving. The car is auto.

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I do not have a way to measure temperature.I believe driving 30 min in Cyprus conditions the exhaust pipe where sensor is located should yet to its max temp whatever that is.

I measured the resistance after 5 min, 10 and 30 min driving and its value is around 17 to 18 Ohms.

I have been monitoring the fuel consumption for a year and is on average 25 mpg mostly city driving. The car is auto.

if you avarage that in town then im sure the O2 sensor is doing it's job. If it's not broke don't fix it!

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