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Thread: Error 13 Rear 02 Inactive

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  1. #1
    Junior Member
    Join Date
    Jun 2023
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    Error 13 Rear 02 Inactive

    Good evening everyone,
    I write from Italy, Tuscany.
    I own a 2008 Buell XB12S with EBR ECU, K&N filter and Remus exhaust.

    On the highway the engine light came on.
    I connected with Buelltooth and the reported error is number 13 Rear O2 Inactive.

    I therefore replaced the lambda probe with a new one from Bosch F00HL00311.
    I had quite a ride and the light never came on, the only thing I noticed was the cooling fan coming on repeatedly (the day wasn't that hot).

    Returning to the motorway, as soon as I exceeded 120 kmh, the warning light came on again.
    As soon as I got home I connected with ECMSpy and the error continues to be O2 Sensor.

    Do you have any advice? What could it be?

    Thanks everyone for the support
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