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Thread: 1.8 non-VVT - o2 sensor malfunction

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    Default 1.8 non-VVT - o2 sensor malfunction

    Just started up and got an EML and P0136 registered.

    o2 sensor, bank 1, sensor 2.

    Am I right in thinking this is the sensor which screws into the upper side of the exhaust, just after the flexi joint?

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    Oh, by the way, I just put a bottle of injection cleaner in the tank...

    Could this be causing odd readings on the lambda resulting in the EML?

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    VIP-Member Caveman_nige's Avatar
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    thats the one i would be cleaning up first..

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    Regular Member Das's Avatar
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    Yup the second one after the flexi. TBH I wouldnt even bother trying to remove it, most likely knacker up the flexi. Mine throws the same 0136 and 0036 codes weekly, does not effect the running or the mpg that I can see. I just clear it with my code reader. I will change it when the front pipe gives in.

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    Hi,

    Looks like P0136 is a heater fault with the sensor. If you unplug the electrical connector for the Post-CAT (rear) sensor, you can test the heater circuit with a multimeter. There will be 2 wires the same colour on the sensor - measure the resistance between these 2 wires. Should be about 4 or 5 ohms. If the heater has failed, you will not get a reading as it fails open-circuit (element burns out). If the heater has failed, cleaning the sensor wont help, you need a new sensor. Looks like they cost about £35 for a part with correct plug.

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    Regular Member patch22's Avatar
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    Black wire, grey wire and two white wires,had the same problem on my old vec b Sri,ended up changing it

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