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Citroen C5 1.6 HDI Emergency Mode: Error P0299, Power Loss, Replacing Valves, Turbine & FAP

tiszer83 33525 1
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  • #1 16437350
    tiszer83
    Level 1  
    Hello.
    I have a problem with citroen c5 1.6 hdi.
    After driving a car to third gear ato, it goes into emergency mode and loses power.
    Error P0299 kind of saying everything.
    I just had a second car to replace valves etc. ...
    One by one, I replaced the turbine control valve, BSM, turbine, the whole supercharging system (throttle with sensors, intercooler and hoses) and nothing ...
    The error is still coming back.
    I will add that the FAP has been programmed and unfortunately after its reprogramming I did not have the opportunity to check how the car works, because just men came to replace the window, and later with the washer under my hand I washed the engine (such a coincidence)
    Since then, after driving a few hundred meters, the car enters emergency mode.
    I would add that to check whether this is not a fault in the ECU, the original software has been restored, but nothing has changed.
    My hands have already dropped.
    Can anyone advise me what else I can do.
    I would add that the operation of the vacuum valve in both cases (i.e. in a functional car and in the citroen) even at a standstill is not the same.
    What else controls this valve, because here I see the problem.
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  • #2 16437466
    blekis
    Level 27  
    Complete with the N75, there is also a sensor that is on the turbo pear.
    If this will give a wrong value, the valve will be driven according to the sensor signal.
    You can skip the valve for a moment (unclip the vacuum tubes) and check if the turbine is alive and gives you pressure, but it's sensible ;)

    It is best to look for a person who will have the appropriate diagnostic interface for your car. Unfortunately, ELM (probably that you checked errors) does not connect with all modules correctly, and sometimes the data is sucked out of the finger.
    And in order not to wander, all the parameters and modules needed to be accessed.

    What else can I suggest regarding the turbine sensor is to check the beam between the sensor and the ECU.
    It seems to me that you did not need to replace so many elements.
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