EM TuningChris Nott
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  1. #1
    4th Gear

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    Apr 2006
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    fault code 16618

    hi the Emission control light on in my 2.0tdi, its a 2004 year, i had it serviced by audi a week and half ago, does anyone know what it can be, its done 53k on the clock

    just been to my local garage, they pluged in there hand held dianogtic system and 2 faults came up one was a electric fault in cylender 2 (glow plug) which i was aware of as audi dealers told me when i serviced it and the second one was code 16618 Boost Pressure Regulation: Limit Exceeded (Overboost Condition) something which i was told ,anyone got views on it, he checked for loose connection found 1 with the air fitler pipe the one that goes in the engine, that was not put on correctly,and he also found that one of the pipes was worn thin by rubbing against the engine cover, oh and he resetted the fault, and said if it comes back on come back, so if he has resetted the fault if something is wrong will the Emission control light come back on?

    has anyone else had this fault code 16618

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  3. #2
    devonmikeyboy's Avatar
    As far from JBS as possible !

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    16618/P0234/000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)

    Possible Symptoms
    • Boost pressure too high
    • Reduced power output
    Possible Causes
    • Hoses incorrect connected, disconnected, blocked or leaking
    • Malfunction N75
    Possible Solutions
    • Check charge pressure control
    • Check Solenoid Valve for Boost Pressure Control (N75)
    06 Audi 2.0 PD140 Sport TDI Quattro S-LINE.
    Old engine 330 bhp @ flywheel 263 bhp @ wheel 490 lb torque. Audidriver write up HERE
    Now stripped and playing with an uprated Cryo treated engine fitted with bigger turbo,water/methanol,uprated injectors etc etc.Wanting 400 bhp and 500 lb torque.

    Other car 500+ bhp MK4 Golf R32 turbo.

 

 

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