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Thread: What is P0036 - HO2S Heater Control Circuit (Bank 1 Sensor 2)

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    Default What is P0036 - HO2S Heater Control Circuit (Bank 1 Sensor 2)

    Hi Guys,

    Just read this code from my 1.8 (123bhp) Vectra C 52 reg using a new U480 reader.

    Is this the Lambda sensor that is located in the engine bay that goes through the headshield into the downpipe?

    Similar to this picture: http://www.lambdapower.co.uk/images/...y_lsswap_1.jpg


    What is Bank 1 related to?
    If this is Sensor 2 where/what is sensor 1? and what is the Sensor after the cat?


    Is this the one i need (£58.45)
    http://www.gendan.co.uk/oxygen_lambd...ctra_1.8i.html


    I need to get htis fixed asap.

    Thanks

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    Regular Member Ste's Avatar
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    Banks 1 and 2 is just is a way of differentiating between the banks on 'V' engines. 4 pots will always be called bank 1 (as it only has one bank of cylinders)

    Sensor 2 usually means post cat (so cat performance can be measured), the one in your pic would be sensor 1.

    I don't know where sensor 2 is, as I've never looked for it.

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    Im not 100% sure but I think that heater banks could be glowplug related.. but im sure someone will correct me if im wrong.. seem to recall a similar problem on an astra works estate and it had new glowplugs fitted..

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    Thanks guys

    The spark plugs (as it is a petrol car) have recently been replaced when i got serviced at the garage.

    So you guys reckon it is pointing at the sensor underneath the car then?

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    pmsl... Doh!! Yeah it won't be glowplug related then!!

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    generally now have upstream 02 sensor and downsteam 02 sensor

    one in the manifold and one in the pipe

    hth

    regards

    0-Large smile ......every time it's driven

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    any idea how difficult sensor 2 is to access, if it was the top one i was going to attempt it myself but unsure if i could easily access sensor 2

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    Ex Vec-C Admin ed taylor's Avatar
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    The second sensor might be underneath behind the engine. Most likely on the top of the exhaust.

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    HO2S is
    H - Heated
    O2 - Oxygen
    S - Sensor

    and what I wrote earlier is correct.

    You sure about the code?? Could it be P0136?

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    I will double check the code later. I read the code using a U480 scanner, but this is the first time i have used it so i am assuming it is accurate. Any one else used / got one of these scanners?

    It picked up 1 x DTC code.

    Is it worth clearing the code? or am i best keeping keeping it in the memory incase i need to go to a garage?

    cheers

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