golf boost pressure regulation

[twiggie]

Hi everybody i have a golf giving me grief !! its a Boost Pressure Regulation Limit Exceeded (Over Boost Condition ) It only happens when shes towing a camping trailer ive check waste gate and controller What do we think ? turbo vanes Blocked the cars done 97,000 miles code P0234 (16618 )

[Witsend]

Mein Farfignueggen is that maybe GDI intake valves and ports accumulating excessive carbon deposits in ports and back of valves could restrict expected flow and cause the boost pressure to become higher and waste gate to be needed sooner than expected under hi load? I would think it would have some type of random misfire on warm up besides if carbon on valves is an issue though

[David Green]

16618/P0234/000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Boost Pressure too high
Reduced Power Output
Possible Causes
Hoses incorrectly connected, disconnected, blocked or leaking
Boost Pressure Control Valve (N75) faulty
Boost Pressure Sensor (G31) faulty
Turbo Charger stuck/faulty
Possible Solutions
Check Charge Pressure Control System
Perform Output Test (to check the Turbo Charger)
Perform Basic Setting (to check the Charge Pressure Control)
Perform Pressure Test to locate Leaks
Check/Replace Boost Pressure Control Valve (N75)
Check/Replace Boost Pressure Sensor (G31)
Check/Replace Turbo Charger

[Witsend]

Who tows a camper with a VW Golf ? Probably Can't be much bigger than a pop up casket with a sleeping bag.
Looks like This guy still takes his wife with him everywhere

https://www.youtube.com/watch?v=AYIjgpvCalg