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a3 turbo overboost condition anyone know what the problem will be as my a3 tdi sport 140 keeps going into limp mode and giving a fault code of16618 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition) P0234 - 000 - - many thanks
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Comment there are some problems known with the N75 valve also make sure you check the airtubes to washed gate there is a discussion going on on a forum regarding same error code 1 having a slight different error message but maybe this gives you a hint in what direction to look http://forums.vwvortex.com/zerothread?id=1303680
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Comment You wouldn't believe this. With all my problems w/16683 not reaching the control limit now I get the 16618 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition) P0234 and overboosrting hehe So I bought today a brand new DV 710 N. I had 710 G which replaced the stock (stick number, anyone?). After I did the swap the car started throwing the 16618 and is going into limp mode. I also have my N75 J back in. So, I've read that it could be faulty DV( I dont; have the vag pump to test, so how can I test if the DV, brand new, is shot?) I will drive with it tomorrow to see if something will "adapt", but I doubt it. I will then put the 710 G back and see if I will get the 16683 or will be something else. I also read could be the MAP? Where the heck is that and how can I get to it?The Bentley suggests that when 16618 is detected, the G31 charger air pressure sensor - needs to be checked. I'm still trying to figure out which one is that so I can measure the resistence. It's time for me to add more confusion to the issue I went to the dealer and got the 710N DV and put it in last weekend. Well, with my glued in N75J it made the car drive like .... Anyway, the J was ibviously leaking and I think the bobbin is going to go soon (it measured 26ohm resistance - it needs to be 25-35 ohms). The stock F measured 31ohms. So I put my stock N75F (it has always been at 3 o'clock position) and I don;t get anycodes for 3rd day now. (this is the discusion there)
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Comment the MAP is located on the intercooler or on the intake pipes leading to the inlet manifold it should be the furthest sensor down the intake system just before the inlet manifold and senses boost pressure, it will be black in colour with 3 or 4 pins and fixed with 2 bolts
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