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Hey how many 02 sensors does the is200 have and are they all the same part number or do each of them differ?

Thanks

Tom

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If you have got some error codes coming up referring to the sensors, post them up here and I'm sure that folks here will be able to help you work out what the problem is.

Two of the sensors are in the exhaust manifold in the engine bay, the third is underneath the car in the exhaust pipe.

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ahh two in exhaust manifold so if you take the cats out the manifold would the sensor show the engine light....

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ahh two in exhaust manifold so if you take the cats out the manifold would the sensor show the engine light....

Someone who has de-catted their manifold will be able to comment better than me, but I believe the two in the manifold are before the pre-cats, so removing the pre-cats shouldn't make any difference to them, I think.

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Cheers, I have got an error code and it indicates one of them has failed in one of the manifolds, 2nd one i believe.

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Cheers, I have got an error code and it indicates one of them has failed in one of the manifolds, 2nd one i believe.

See this diagram for which sensor is which.

Ah good diagram thanks mate.

Tom

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i have a error code p0420 which relates to the o2 sensor. now there are 3 how do i know which sensor is a bad one

thanks

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i have a error code p0420 which relates to the o2 sensor. now there are 3 how do i know which sensor is a bad one

P0420 is "Catalyst system efficiency below threshold (Bank 1)". It could be a leak in your exhaust, the O2 sensor or the cat. If it is an O2 sensor it could be any one of the three, since this code comes up due to a different reading between sensors. You could try the procedures detailed here to check out the three sensors, or take it to a garage for them to do it.

As I said though, it could be down to an exhaust leak or a failing cat too. But the sensors do seem like a good candidate for the problem.

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well got the exhaust checked for leaks it wasnt that. and it happened few days after i got the blueflame exhaust fitted so its prob the senosor

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morning peeps, i had the same code about 6/7 months ago .

after getting the code read and re-setting the light it has not come back on since(touching wood)

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i have reset the ecu several times still comes up.

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Ive got error code P0171 and P0174

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Bank 1 is the passenger side o2 sensor 

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