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    Posted by simon dean on September 30, 2005, 9:40 pm, in reply to "Re: Peugeot 406 Hdi 1999 Bosch 15C2"

    hi jim

    if you have codes for both egr and turbo then check the 2 solenoids that control these components (usually a voltage supply to solenoid and earth control to ecu)also check the vac pipes are good and connected to solenoid correctly(white spot on solenoid is out to component)check you also have correct vacuum from vac pump to solenoids.
    sounds like when you try to rev car you don't have correct turbo boost and possibly incorrect egr position so an air mass code will be stored by ecu because its out of its map position so to speak.
    not sure on your 3 piston code..this normally relates to the 3rd piston deactivation circuit.this is situated within the pump and is controlled by the ecu to take load of the pump when running at low speeds/load.

    hth simon

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