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Thread: Fault Code P1109

  1. #1
    Regular Member lutontownfan's Avatar
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    Default Fault Code P1109

    Can anyone please tell me what the fault is as this has come up on my code reader tool, my car is a diesel 1.9 and will not start.
    This is the only fault that has come up any help will be great, thanks.

  2. #2
    Regular Member Keefyb007's Avatar
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    Think it is an o2 Sensor according to my OBD-II Code reader APP on the Iphone

    O2 Sensor Voltage too low/Air leak or the Sensor is messing around
    Last edited by Keefyb007; 23rd December 2010 at 16:58. Reason: adding comments

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    Regular Member lutontownfan's Avatar
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    The booklet that came with my reader does not have the code listed!!! If its an 02 sensor i would be pleased at least it would be a simple job to replace it. But would this prevent the engine from starting?

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    Regular Member ChrisBilly's Avatar
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    The O2 sensor is only picking up the fault, its unlikely to be the actual fault. Most likely to be an air leak somewhere.

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    Regular Member Jezzy's Avatar
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    P1109 on my lists comes up as either:

    Intake Air Temperature (IAT) - B Sensor Intermittent

    or

    Secondary Port Throttle System

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    Regular Member lutontownfan's Avatar
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    Just been out and the swirl bar has come off and laying on its side how can i fix this its hard to reach it with fingers

  7. #7
    Regular Member nokiaman1978's Avatar
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    metal coat hanger, then use a chopstick and a long screwdriver to put back onto pegs, there is a hole in middle of bar, force chopstick in and line up with pegs and push down with screwdriver, simples 5 min work.

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