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Yaris O2 Sensors


winger
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:help: Pease can anyone tell me which oxygen sensor is BANK 1 SENSOR 2, is it the one before the CAT or after.

Many thanks

Winger

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Bank 1, Sensor 2 is the one after the cat. Why u changing it? If its cos of fault code for lean mixture/ P0141 or P0171 the I'd clean your air flow meter first. This throws up a load of fault codes relating to a faulty 02 sensor.

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Bank 1, Sensor 2 is the one after the cat. Why u changing it? If its cos of fault code for lean mixture/ P0141 or P0171 the I'd clean your air flow meter first. This throws up a load of fault codes relating to a faulty 02 sensor.

Thanks for your reply. I don't know the error code. The Toyota Dealer told me it was a "slow responding Bank 1 sensor 2 oxygen sensor.

Do you think cleaning the air flow meter would help?

thanks.

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Have a look on your air flow meter. There is a 'build date' code on it which is when the meter was manufactured. I can't remember off hand but if its manufactured before 22 September 2000 it will be the old style one as there are modified meters from this date.

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I've just cleaned the airflow sensor, disconnected and reconnected the Battery and the engine management light has gone out - but does the fault code need clearing by a garage or can it be done DIY.

I only use the car for work so will let you know next week if it's solved the problem.

Many thanks for your assistance

Winger

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