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Hello all, I have a 2008 Mk5 GTI with the BPY engine and its inspection is coming due. Before getting it reinspected, I have to clear the Check Engine Light code it has. It is currently throwing a P0299 underboost error which I have not been able to solve for some time now. Attempts to remedy...

I've been trying to solve a check engine light code I've had for almost 6 months now, code P0299 (Underboost). There has been no problem driving the car, and I have been making about 15 lbs of boost. I took that value from block 115, the actual boost pressure and the specified boost pressure...

About half a year ago I purchased a used 2008 Stock Mk5 GTI with around 78k miles on it, and after about a month, the check engine light went on. When we plugged it up to VAG-Com, it returned a P0229 Underboost code. The diverter valve has already been replaced with the revision d version...