Overboost limp mode

itc217

Member
Joined
Oct 29, 2010
Location
Rockford, IL
TDI
2002 Golf
Hi TDIers-
I could use a little help interpreting this boost chart. I get an overboost error P0234, and go into limp mode. The problem is significantly worse when the engine gets good and warm, i.e. 45 minutes into a trip. I've replaced the MAF, N75, actuator, and most hoses recently.

Clearly I'm overboosting significantly, should I correct this by adjusting the actuator or is this treating a symptom rather than the problem?
 
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